Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 116
Filter
1.
J Pediatr ; 252: 154-161.e3, 2023 01.
Article in English | MEDLINE | ID: mdl-35985536

ABSTRACT

OBJECTIVE: To investigate the relationship between birth weight for gestational age and health care utilization of term offspring from birth to 7 years. STUDY DESIGN: We used a population-based retrospective cohort study of infants (≥37 weeks' gestational age) born between 2003 and 2007 in the Canadian province of Nova Scotia (n = 42 050). Perinatal records were linked to provincial administrative health data from birth to age 7 years. The primary outcome was health care utilization (physician visits and hospital admissions) and costs. Birth weight was categorized as small for gestational age (SGA, <10th percentile), appropriate for gestational age (AGA), or large for gestational age (LGA, >90th percentile). Regression models adjusted for potential confounders were used to investigate the associations. RESULTS: Children born SGA had a higher number of specialist visits and hospital admissions, a longer length of stay for the birth admission, and, as a result, higher physician and hospital costs amounting to a cost differential of Can $1222 during the first 7 years of life compared with children born AGA. By contrast, health care use and costs did not differ between children born LGA and AGA. CONCLUSION: Former SGA term infants have a moderate increase in health care use and costs in early childhood compared with former AGA infants, and LGA birth at term is not associated with higher health care utilization.


Subject(s)
Infant, Small for Gestational Age , Patient Acceptance of Health Care , Infant, Newborn , Infant , Pregnancy , Female , Child , Child, Preschool , Humans , Birth Weight , Retrospective Studies , Gestational Age , Nova Scotia
2.
Eur J Pediatr ; 181(12): 4215-4220, 2022 Dec.
Article in English | MEDLINE | ID: mdl-36194256

ABSTRACT

Umbilical cord milking improves postnatal adaptation and short-term outcomes of very preterm infants compared to early cord clamping. Little is known about the impact of umbilical cord milking on long-term neurodevelopmental outcomes. The objective of this study is to compare the effects of intact umbilical cord milking (UCM) vs. early cord clamping (ECC) at birth on neurodevelopmental outcomes at 36 months' corrected age. Preterm infants < 31 weeks' gestation who were randomized at birth to receive three time milking of their attached cord or ECC (< 10 s) were evaluated at 36 months' corrected age. Neurodevelopmental outcomes were assessed by blinded examiners using Bayley Scales of Infant and Toddler Development (version III). Analysis was by intention to treat. Out of the 73 infants included in the original trial, 2 died and 65 (92%) infants were evaluated at 36 months' corrected age. Patient characteristics and short-term outcomes were similar in both study groups. There were no significant differences in the median cognitive, motor or language scores or in the rates of cerebral palsy, developmental impairment, deafness, or blindness between study groups. CONCLUSION: Neurodevelopmental outcomes at 36 months' corrected age of very preterm infants who received UCM were not shown to be significantly different from those who received ECC at birth. TRIAL REGISTRATION: ClinicalTrials.gov: NCT01487187 What is Known: • Compared to early cord clamping, umbilical cord milking improves postnatal adaptation and short-term outcomes of very preterm infants compared to early cord clamping. • Little is known about the impact of umbilical cord milking on neurodevelopmental outcomes. WHAT IS NEW: • Neurodevelopmental outcomes at 3 years of age were not significantly different in very preterm infants who received cord milking vs. those who received early cord clamping at birth.


Subject(s)
Infant, Premature, Diseases , Infant, Premature , Infant , Female , Infant, Newborn , Humans , Umbilical Cord , Constriction , Infant, Very Low Birth Weight , Fetal Growth Retardation
3.
JAMA ; 325(22): 2285-2293, 2021 06 08.
Article in English | MEDLINE | ID: mdl-34100870

ABSTRACT

Importance: Seasonal influenza vaccination in pregnancy can reduce influenza illness among pregnant women and newborns. Evidence is limited on whether seasonal influenza vaccination in pregnancy is associated with adverse childhood health outcomes. Objective: To assess the association between maternal influenza vaccination during pregnancy and early childhood health outcomes. Design, Setting, and Participants: Retrospective cohort study, using a birth registry linked with health administrative data. All live births in Nova Scotia, Canada, between October 1, 2010, and March 31, 2014, were included, with follow-up until March 31, 2016. Adjusted hazard ratios (HRs) and incidence rate ratios (IRRs) with 95% confidence intervals were estimated while controlling for maternal medical history and other potential confounders using inverse probability of treatment weighting. Exposures: Seasonal influenza vaccination during pregnancy. Main Outcomes and Measures: Childhood outcomes studied were immune-related (eg, asthma, infections), non-immune-related (eg, neoplasms, sensory impairment), and nonspecific (eg, urgent or inpatient health care utilization), measured from emergency department and hospitalization databases. Results: Among 28 255 children (49% female, 92% born at ≥37 weeks' gestation), 10 227 (36.2%) were born to women who received seasonal influenza vaccination during pregnancy. During a mean follow-up of 3.6 years, there was no significant association between maternal influenza vaccination and childhood asthma (incidence rate, 3.0 vs 2.5 per 1000 person-years; difference, 0.53 per 1000 person-years [95% CI, -0.15 to 1.21]; adjusted HR, 1.22 [95% CI, 0.94 to 1.59]), neoplasms (0.32 vs 0.26 per 1000 person-years; difference, 0.06 per 1000 person-years [95% CI, -0.16 to 0.28]; adjusted HR, 1.26 [95% CI, 0.57 to 2.78]), or sensory impairment (0.80 vs 0.97 per 1000 person-years; difference, -0.17 per 1000 person-years [95% CI, -0.54 to 0.21]; adjusted HR, 0.82 [95% CI, 0.49 to 1.37]). Maternal influenza vaccination in pregnancy was not significantly associated with infections in early childhood (incidence rate, 184.6 vs 179.1 per 1000 person-years; difference, 5.44 per 1000 person-years [95% CI, 0.01 to 10.9]; adjusted IRR, 1.07 [95% CI, 0.99 to 1.15]) or with urgent and inpatient health services utilization (511.7 vs 477.8 per 1000 person-years; difference, 33.9 per 1000 person-years [95% CI, 24.9 to 42.9]; adjusted IRR, 1.05 [95% CI, 0.99 to 1.16]). Conclusions and Relevance: In this population-based cohort study with mean follow-up duration of 3.6 years, maternal influenza vaccination during pregnancy was not significantly associated with an increased risk of adverse early childhood health outcomes.


Subject(s)
Influenza Vaccines/adverse effects , Influenza, Human/prevention & control , Pregnancy Complications, Infectious/prevention & control , Vaccination/adverse effects , Adult , Asthma/epidemiology , Child, Preschool , Confidence Intervals , Female , Follow-Up Studies , Health Services Needs and Demand/statistics & numerical data , Humans , Incidence , Infant , Infant, Newborn , Infections/epidemiology , Influenza Vaccines/administration & dosage , Live Birth/epidemiology , Male , Maternal Age , Neoplasms/epidemiology , Nova Scotia/epidemiology , Outcome Assessment, Health Care , Pregnancy , Proportional Hazards Models , Retrospective Studies , Seasons , Sensation Disorders/epidemiology , Vaccination/statistics & numerical data , Young Adult
4.
Am J Clin Nutr ; 114(3): 1238-1250, 2021 09 01.
Article in English | MEDLINE | ID: mdl-34081131

ABSTRACT

BACKGROUND: Reports on the adequacy of vitamin D status of pregnant women are not available in Canada. OBJECTIVES: The objectives of this study were to examine vitamin D status across pregnancy and identify the correlates of vitamin D status of pregnant women in Canada. METHODS: Pregnant women (≥18 years) from 6 provinces (2008-2011) participating in a longitudinal cohort were studied. Sociodemographic data, obstetrical histories, and dietary and supplemental vitamin D intakes were surveyed. Plasma 25-hydroxyvitamin D (25OHD) was measured using an immunoassay standardized to LC-MS/MS from samples collected during the first (n = 1905) and third trimesters (n = 1649) and at delivery (n = 1543). The proportion of women with ≥40 nmol/L of plasma 25OHD (adequate status) was estimated at each time point, and factors related to achieving this cut point were identified using repeated-measures logistic regression. Differences in 25OHD concentrations across trimesters and at delivery were tested a using repeated-measures ANOVA with a post hoc Tukey's test. RESULTS: In the first trimester, 93.4% (95% CI: 92.3%-94.5%) of participants had 25OHD ≥40 nmol/L. The mean plasma 25OHD concentration increased from the first to the third trimester and then declined by delivery (69.8 ± 0.5 nmol/L, 78.6 ± 0.7 nmol/L, and 75.7 ± 0.7 nmol/L, respectively; P < 0.0001). A lack of multivitamin use early in pregnancy reduced the odds of achieving 25OHD ≥40 nmol/L (ORadj = 0.33; 95% CI: 0.25-0.42) across all time points. Factors associated with not using a prenatal multivitamin included multiparity (ORadj = 2.08; 95% CI: 1.42-3.02) and a below-median income (ORadj = 1.39; 95% CI: 1.02-1.89). CONCLUSIONS: The results from this cohort demonstrate the importance of early multivitamin supplement use to achieve an adequate vitamin D status in pregnant women.


Subject(s)
Prenatal Nutritional Physiological Phenomena , Vitamin D Deficiency/prevention & control , Vitamins/administration & dosage , Vitamins/pharmacology , Adult , Cohort Studies , Diet , Female , Humans , Longitudinal Studies , Pregnancy
5.
Int J Hyg Environ Health ; 232: 113689, 2021 03.
Article in English | MEDLINE | ID: mdl-33445101

ABSTRACT

Childhood exposure to phthalates, a class of chemicals with known reproductive and developmental effects, has been hypothesized to increase the risk of obesity, but this association is not well understood in preschool children. We examined the association between urinary concentrations of phthalate metabolites and concurrently measured body mass index (BMI) and skinfolds among children between the ages of two and five years. We collected anthropometric measures and biomonitoring data on approximately 200 children enrolled in the Maternal-Infant Research on Environmental Chemicals Child Development Plus study. We measured 22 phthalate metabolites in children's urine and used the 19 metabolites detected in at least 40% of samples. Our primary outcome was BMI z-scores calculated using the World Health Organization growth standards. Skinfold z-scores were secondary outcomes. We used multivariable linear regression to evaluate the association between tertiles of phthalate concentrations and each anthropometric measure. We also used weighted quantile sum regression to identify priority exposures of concern. Our analytic sample included 189 singleton-born children with complete anthropometric data. Children with concentrations of the parent compound di-n-butyl phthalate (∑DnBP) in the third tertile had 0.475 (95% CI: 0.068, 0.883) higher BMI z-scores than those in the lower tertile. ∑DnBP was identified as a priority exposure in the weighted quantile sum regression BMI model. In this population of Canadian preschool aged children, we identified DnBP as a potential chemical of concern in regard to childhood obesity. Future research with serial phthalate measurements and anthropometric measurements in young children will help confirm these findings.


Subject(s)
Environmental Pollutants , Pediatric Obesity , Body Mass Index , Canada , Child , Child Development , Child, Preschool , Environmental Exposure , Humans , Infant , Phthalic Acids
6.
J Obstet Gynaecol Can ; 43(2): 191-196, 2021 02.
Article in English | MEDLINE | ID: mdl-32988804

ABSTRACT

OBJECTIVE: The purpose of this study was to assess compliance with fetal fibronectin (fFN) testing recommendations at a single tertiary care perinatal centre. The secondary objective was to identify factors associated with compliance with these recommendations. METHODS: A retrospective cohort study was conducted from January 1, 2016 to December 31, 2016 of all patients who presented to the IWK Health Centre with suspected preterm labour. Inclusion criteria included symptoms of preterm labour prior to 370 weeks gestation, singleton or multiple pregnancy, and established fetal wellbeing. Exclusion criteria included severe fetal anomaly, contraindications to tocolysis, transfer from community hospital, or inadequate documentation. Provider compliance was evaluated to determine: 1) whether the test was performed for appropriate indications according to provincial fFN guidelines; 2) whether fFN results were appropriately being used to inform patient care. Logistic regression was used to determine factors associated with compliance. RESULTS: A total of 528 patients presented with symptoms of preterm labour. The overall compliance with testing recommendations was 76.1%. Compliance for patients who met criteria for fFN testing was 73%, and compliance for those not meeting criteria was 76.4%. Of patients with a negative fFN result, 85.3% were appropriately discharged home without intervention. Gestational age, time of day, and non-obstetrician provider type were found to be associated with compliance. CONCLUSION: Despite regional and national guidelines, this study demonstrates a compliance rate of 76% in our centre, indicating a gap in provider knowledge regarding proper use and interpretation of fFN. Non-obstetrician provider type was associated with decreased compliance.


Subject(s)
Fibronectins/blood , Guideline Adherence/statistics & numerical data , Obstetric Labor, Premature/therapy , Premature Birth , Canada , Female , Health Knowledge, Attitudes, Practice , Humans , Infant, Newborn , Medical Audit , Obstetric Labor, Premature/diagnosis , Predictive Value of Tests , Pregnancy , Quality Improvement , Retrospective Studies , Tertiary Healthcare
7.
Obesity (Silver Spring) ; 28(11): 2224-2231, 2020 11.
Article in English | MEDLINE | ID: mdl-33001584

ABSTRACT

OBJECTIVE: This study aimed to quantitatively examine the association between gestational weight gain (GWG) and risk of autism spectrum disorder (ASD) in offspring. METHODS: Electronic databases were searched for studies of excessive or inadequate GWG, as compared with recommended GWG, in relation to the risk of ASD in offspring. Measures of the association from primary studies were pooled using a meta-analytic approach and expressed as weighted odds ratios (ORs) with 95% CIs. RESULTS: Nine studies were identified, including 323,253 participants with 4,135 cases of ASD from five cohort studies and 1,462 cases and 3,265 controls from four case-control studies. Evidence from cohort studies indicates that both excessive and inadequate GWG was significantly associated with a higher risk for ASD in offspring. The pooled OR of ASD was 1.10 (95% CI: 1.02-1.18) for excessive GWG and 1.13 (95% CI: 1.04-1.24) for inadequate GWG using recommended GWG as the reference. Evidence from case-control studies suggests that excessive GWG (1.38 [95% CI: 1.19-1.62]) but not inadequate GWG (0.87 [95% CI: 0.72-1.04]) was significantly associated with a higher risk for ASD. CONCLUSIONS: The accumulated evidence has supported that gaining weight outside the recommended GWG is associated with a higher risk for ASD in offspring.


Subject(s)
Autism Spectrum Disorder/etiology , Gestational Weight Gain/physiology , Autism Spectrum Disorder/pathology , Child , Child, Preschool , Cohort Studies , Female , Humans , Male
8.
Reprod Toxicol ; 95: 11-18, 2020 08.
Article in English | MEDLINE | ID: mdl-32380128

ABSTRACT

Our objective was to determine if maternal first trimester urinary phthalate concentrations are associated with reduced penile length (PL) or width (PW) at birth in full term singletons. First trimester phthalate metabolite urinary concentrations were obtained from mothers participating in a Canadian pregnancy cohort study (MIREC). PL and PW were measured shortly after birth in the male offspring. Univariate and multivariable linear regressions were performed to study associations between maternal phthalate exposure and penile measurements, adjusting for confounders. On univariate analysis of 170 mother-infant pairs, PW showed an inverse relationship with the concentration of mono-3-carboxypropyl phthalate (MCPP-p = 0.016), which was not confirmed on multivariable analysis. On multivariable analysis controlling for infant's size and other confounders, no statistically signficant associations between phthalate metabolite concentrations and PL or PW were identified. In this population of Canadian women, there was no strong evidence to suggest an association between maternal first trimester urinary phthalates with PL or PW in term singletons.


Subject(s)
Endocrine Disruptors/urine , Environmental Pollutants/urine , Maternal Exposure , Penis/growth & development , Phthalic Acids/urine , Pregnancy Trimester, First/urine , Adult , Canada , Cohort Studies , Female , Humans , Infant, Newborn , Male , Maternal-Fetal Exchange , Pregnancy , Young Adult
9.
Prim Health Care Res Dev ; 21: e5, 2020 03 03.
Article in English | MEDLINE | ID: mdl-32122440

ABSTRACT

BACKGROUND: Community pharmacies are recognised as an under-utilised, accessible resource that could support the urgent care agenda. This study aimed to provide a snapshot of the number and nature of urgent care requests presented to a sample of community pharmacies in three counties in southern England, to determine how requests are managed, whether management is appropriate, as assessed by a group of experts, and whether customers receiving the care are satisfied with pharmacists' interventions. METHODS: A representative sample of pharmacists across the region was invited to keep a log-book documenting all urgent care requests over a two-week period. Data were analysed to estimate frequency and type of requests and to compare consultations in core and non-core hours. Log-book entries were scrutinised blind by an expert panel to determine appropriateness of pharmacist's responses. Customers receiving pharmacists' interventions were surveyed to assess satisfaction. RESULTS: Seventeen pharmacies kept log-books detailing 432 urgent care consultations, equating to 13 consultations per pharmacy per week. Of these, 70% (n = 302) were dealt with by the pharmacist in-house with 30% (n = 130) resulting in referrals. Locum pharmacists were significantly more likely to refer to other NHS services than regular pharmacists. Over half the requests were for symptom management, skin problems presenting most commonly (38% of all symptoms presented). Forty-seven percent of consultations were considered to have 'averted the need for other NHS services'. Pharmacists' referral (but not assessment of urgency) was deemed appropriate by the expert panel in 90% of consultations. Ninety-five percent of customers surveyed were satisfied with the service and would use the pharmacy again. CONCLUSION: Extrapolating findings across the study population (approximately 4.4 million) suggests that community pharmacists manage over 11 500 urgent care consultations per week, with 8050 managed independently. These prevent approximately 5400 other NHS encounters, while also meeting customer expectations and expert panel endorsement.


Subject(s)
Community Pharmacy Services , Critical Care , Pharmacists , Professional Role , Referral and Consultation , Documentation , England , Humans , Referral and Consultation/statistics & numerical data
10.
Paediatr Perinat Epidemiol ; 34(2): 214-221, 2020 03.
Article in English | MEDLINE | ID: mdl-32003903

ABSTRACT

BACKGROUND: The negative impact of exposures such as maternal obesity, excessive gestational weight gain, and hypertension in pregnancy on the health of the next generation has been well studied. Evidence from animal studies suggests that the effects of in utero exposures may persist into the second generation, but the epidemiological literature on the influence of pregnancy-related exposures across three generations in humans is sparse. OBJECTIVES: This cohort was established to investigate associations between antenatal and perinatal exposures and health outcomes in women and their offspring. POPULATION: The cohort includes women who were born and subsequently had their own pregnancies in the Canadian province of Nova Scotia from 1980 onward. DESIGN: Intergenerational linkage of data in the Nova Scotia Atlee Perinatal Database was used to establish a population-based dynamic retrospective cohort. METHODS: The cohort has prospectively collected information on sociodemographics, maternal health and health behaviours, pregnancy health and complications, and obstetrical and neonatal outcomes for two generations of women and their offspring. PRELIMINARY RESULTS: As of October 2018, the 3G cohort included 14 978 grandmothers (born 1939-1986), 16 766 mothers or cohort women (born 1981-2003), and 28 638 children (born 1996-2018). The cohort women were generally younger than Nova Scotian women born after 1980, and as a result, characteristics associated with pregnancy at a younger age were more frequently seen in the cohort women; sampling weights will be created to account for this design effect. The cohort will be updated annually to capture future deliveries to women who are already in the cohort and women who become eligible for inclusion when they deliver their first child. CONCLUSIONS: The 3G Multigenerational Cohort is a population-based cohort of women and their mothers and offspring, spanning a time period of 38 years, and provides the opportunity to study inter- and transgenerational associations across the maternal line.


Subject(s)
Grandparents , Hypertension, Pregnancy-Induced , Mothers , Obesity , Pregnancy Outcome/epidemiology , Prenatal Exposure Delayed Effects , Adult , Aged , Body Mass Index , Child , Cohort Effect , Cohort Studies , Female , Health Status Disparities , Humans , Hypertension, Pregnancy-Induced/diagnosis , Hypertension, Pregnancy-Induced/epidemiology , Male , Maternal Behavior , Nova Scotia/epidemiology , Obesity/diagnosis , Obesity/epidemiology , Pregnancy , Prenatal Exposure Delayed Effects/epidemiology , Prenatal Exposure Delayed Effects/prevention & control , Socioeconomic Factors
11.
Int J Pharm Pract ; 28(4): 301-311, 2020 Aug.
Article in English | MEDLINE | ID: mdl-31638309

ABSTRACT

OBJECTIVES: To identify consultation tools cited in the published literature and undertake a narrative review which establishes their scope to support the delivery of person-centred medicine-focused consultations between community pharmacists and patients in the United Kingdom (UK). KEY FINDINGS: Nine consultation tools used in a pharmacy context were identified. Four tools (Calgary-Cambridge guide, MRCF, MUR and NMS advanced services and PaCT) were selected for further appraisal. None of the tools identified provided a suitable format or sufficient guidance to address all components required for the delivery of a person-centred patient consultation in practice. SUMMARY: Tools available to UK pharmacists are inadequate for fully supporting delivery of a person-centred consultation in practice. Revision of existing tools or creation of more pharmacy-specific tools will support UK pharmacists' delivery of person-centred consultations in practice.


Subject(s)
Community Pharmacy Services , Patient-Centered Care , Pharmacists , Referral and Consultation , Communication , Humans , United Kingdom
12.
Pediatr Obes ; 15(3): e12587, 2020 03.
Article in English | MEDLINE | ID: mdl-31845502

ABSTRACT

BACKGROUND: Though the physiological roles of adipokines in metabolism, insulin resistance and satiety are clear, literature regarding associations between cord blood adipokine levels and childhood adiposity is equivocal. OBJECTIVES: To determine whether cord blood levels of leptin and adiponectin are associated with adiposity in children 2 to 5 years of age, and whether such associations are modified by sex. METHODS: Leptin and adiponectin levels were measured in cord blood and anthropometric measures were completed on 550 children enrolled in the Maternal-Infant Research on Environmental Chemicals Child Development Plus study (MIREC-CD Plus). We used multivariable linear and Poisson regression models to determine associations between cord blood adipokine levels and child body mass index (BMI), triceps and subscapular skinfold thickness and risk of overweight/obesity and to assess effect modification by child sex. RESULTS: Cord blood adiponectin was significantly associated with modest increases in BMI and the sum of triceps and subscapular skinfold z-scores in boys but not girls. A doubling of adiponectin levels was associated with a 30% increased risk of overweight/obesity in boys (RR = 1.30; 95% CI: 1.02, 1.64). Leptin was not associated with anthropometric measures in either sex. CONCLUSIONS: The observed associations between adiponectin and adiposity in boys were statistically significant, of moderate magnitude, and underscore the value of considering sex-specific patterns.


Subject(s)
Adipokines/blood , Adiposity/physiology , Fetal Blood/chemistry , Pediatric Obesity/blood , Adult , Child, Preschool , Female , Humans , Male , Sex Characteristics
13.
Environ Res ; 179(Pt A): 108736, 2019 12.
Article in English | MEDLINE | ID: mdl-31541908

ABSTRACT

Fetal exposure to some toxic metals has been associated with reduced fetal growth, but the impact of contemporary, low-level metals on anthropometric measures in childhood is not well understood. Our primary objective was to quantify associations between childhood levels of toxic metals and concurrently measured body mass index (BMI) in a population of Canadian preschool-aged children. We collected biomonitoring data and anthropometric measures on 480 children between the ages of two and five years in the Maternal-Infant Research on Environmental Chemicals (MIREC) Child Development Plus study. Concentrations of four toxic metals (lead, arsenic, cadmium, and mercury) were measured in whole blood collected from pregnant women and their children. Blood levels of key essential elements were also measured in children. Children's weight, height, and BMI z-scores were calculated using the World Health Organization growth standards. We used a series of linear regression models, adjusted for potential parental confounders, concurrently measured metals and elements, and prenatal blood metal levels, to evaluate associations between tertiles of each toxic metal and anthropometric measures. We tested for effect modification by sex. Of the 480 children, 449 (94%) were singleton births and had complete biomonitoring and anthropometric data. The majority of children had detectable concentrations of metals. In the adjusted models, girls with blood lead concentrations in the highest tertile (>0.82 µg/dL) had, on average, 0.26 (95% Cl: -0.55, 0.03) lower BMI z-scores than those in the referent category. In contrast, boys with lead levels in the highest tertile had, on average, 0.14 higher BMI z-scores (95% Cl: -0.14, 0.41) (p-value heterogeneity = 0.04). In this population of Canadian preschool-aged children with low-level blood lead concentrations, we observed effect modification by sex in the association between Pb and BMI but no statistically significant associations in the sex-specific strata. Child blood levels of As, Cd, and Hg were not associated with childhood BMI, weight, or height in boys or girls.


Subject(s)
Environmental Exposure/statistics & numerical data , Environmental Pollutants/blood , Metals/blood , Arsenic , Body Weight , Canada , Child , Child, Preschool , Cohort Studies , Female , Humans , Infant , Lead , Male , Pregnancy
14.
Pediatr Infect Dis J ; 38(11): 1121-1125, 2019 11.
Article in English | MEDLINE | ID: mdl-31425330

ABSTRACT

BACKGROUND: Respiratory syncytial virus (RSV) is the leading cause of viral lower respiratory tract infections in infants. Preterm infants are at increased risk for hospitalization with RSV (RSV-H), but there are few data on the relationship between RSV-H and asthma in preterm infants, or any data stratified by gestational age, and most studies have short follow-up periods. We sought to evaluate the relationship between serious RSV illness and onset of asthma up to 5 years of age in a cohort of preterm children and to quantify this association. METHODS: A retrospective birth cohort of preterm infants (29 weeks 0 days to 35 weeks 6 days gestational age) was constructed from a provincial population-based database, and children were followed forward for 5 years. Incidence rates of RSV-H and asthma were determined. In a Cox proportional hazards model, controlled for putative confounding factors for asthma, the hazard ratio and 95% CI of asthma in children with and without RSV-H was evaluated. RESULTS: Among 3916 premature children, the incidence rate of RSV-H was 25/1000 infants. The cumulative incidence rate of asthma at 5 years of age in children with RSV-H was 57.9/1000 person-years compared with 36.7 in those without RSV-H; the adjusted hazards ratio for asthma in RSV-H infants was elevated at 1.58 (95% CI: 1.03-2.41). CONCLUSIONS: In prematurely born children, there is a moderate association between severe RSV infection, as measured by RSV-H in the first year of life, and asthma up to 5 years of age.


Subject(s)
Asthma/virology , Late Onset Disorders/virology , Respiratory Syncytial Virus Infections/complications , Asthma/diagnosis , Child, Preschool , Female , Hospitalization/statistics & numerical data , Humans , Infant , Infant, Newborn , Infant, Premature , Male , Respiratory Syncytial Virus, Human/pathogenicity , Retrospective Studies , Risk Factors , Survival Analysis
15.
BMJ ; 366: l4151, 2019 07 10.
Article in English | MEDLINE | ID: mdl-31292120

ABSTRACT

OBJECTIVE: To determine whether any association exists between exposure to 2009 pandemic H1N1 (pH1N1) influenza vaccination during pregnancy and negative health outcomes in early childhood. DESIGN: Retrospective cohort study. SETTING: Population based birth registry linked with health administrative databases in the province of Ontario, Canada. PARTICIPANTS: All live births from November 2009 through October 2010 (n=104 249) were included, and children were followed until 5 years of age to ascertain study outcomes. MAIN OUTCOME MEASURES: Rates of immune related (infectious diseases, asthma), non-immune related (neoplasms, sensory disorders), and non-specific morbidity outcomes (urgent or inpatient health services use, pediatric complex chronic conditions) were evaluated from birth to 5 years of age; under-5 childhood mortality was also assessed. Propensity score weighting was used to adjust hazard ratios, incidence rate ratios, and risk ratios for potential confounding. RESULTS: Of 104 249 live births, 31 295 (30%) were exposed to pH1N1 influenza vaccination in utero. No significant associations were found with upper or lower respiratory infections, otitis media, any infectious diseases, neoplasms, sensory disorders, urgent and inpatient health services use, pediatric complex chronic conditions, or mortality. A weak association was observed between prenatal pH1N1 vaccination and increased risk of asthma (adjusted hazard ratio 1.05, 95% confidence interval 1.02 to 1.09) and decreased rates of gastrointestinal infections (adjusted incidence rate ratio 0.94, 0.91 to 0.98). These results were unchanged in sensitivity analyses accounting for any potential differential healthcare seeking behavior or access between exposure groups. CONCLUSIONS: No associations were observed between exposure to pH1N1 influenza vaccine during pregnancy and most five year pediatric health outcomes. Residual confounding may explain the small associations observed with increased asthma and reduced gastrointestinal infections. These outcomes should be assessed in future studies.


Subject(s)
Child Health , Influenza A Virus, H1N1 Subtype , Influenza Vaccines/adverse effects , Influenza, Human/prevention & control , Pandemics/prevention & control , Pregnancy Complications, Infectious/prevention & control , Prenatal Exposure Delayed Effects , Adult , Asthma/epidemiology , Child, Preschool , Female , Gastrointestinal Diseases/epidemiology , Humans , Infant , Infant, Newborn , Infections/epidemiology , Ontario/epidemiology , Pregnancy , Propensity Score , Registries , Retrospective Studies , Young Adult
16.
Environ Res ; 177: 108593, 2019 10.
Article in English | MEDLINE | ID: mdl-31357157

ABSTRACT

Anogenital distance (AGD) has been used as a marker of fetal androgen action to identify endocrine disrupting chemicals. A US study (TIDES) has reported that the association between some phthalates and reduced AGD in males was only apparent in sons of mothers reporting no stressful life events (SLEs) during pregnancy. The objective of the current study was to examine the potential modifying effect of SLEs and their subjective impact on associations between prenatal phthalates and AGD. First trimester urines from the MIREC Study were analysed for phthalate metabolites and AGD was measured in neonates. Post-delivery, the women answered questions on SLEs during the pregnancy. Women reporting 1 or more SLEs during pregnancy were considered a "higher stressor" group, whereas women reporting no SLEs or who reported a SLE that was perceived as not at all stressful were considered a "lower stressor" group. Multivariable linear regression models were fit stratified by stressor group. Maternal stressor, AGD and phthalates results were available for 153 females and 147 males. A summary measure of androgen-disrupting phthalates (Σ AD) was associated with significantly longer AGDs in females from the higher stressor group. These effect sizes were increased when the perceived impact was restricted to moderately or very much stressful. In males, all phthalates were associated with longer anopenile distance (APD), regardless of stressor group; however, higher Σ AD was associated with significantly longer APD in the lower stressor group. In contrast to the TIDES study, we did not observe shorter AGDs in male infants prenatally exposed to di-(2-ethylhexyl) phthalates, regardless of maternal stressor level. In conclusion, we were unable to replicate the findings of the TIDES study, but did find some evidence that prenatal SLEs may modify associations between phthalates and female AGD. Further research with other populations and measures of prenatal stress may shed more light on whether prenatal stress is an important effect modifier of associations between phthalates (or other chemicals) and anogenital distance.


Subject(s)
Anorectal Malformations/epidemiology , Environmental Exposure/statistics & numerical data , Environmental Pollutants/metabolism , Phthalic Acids/metabolism , Stress, Physiological/physiology , Endocrine Disruptors/metabolism , Endocrine Disruptors/toxicity , Environmental Pollutants/toxicity , Female , Humans , Infant , Infant, Newborn , Male , Mothers , Phthalic Acids/toxicity , Pregnancy , Pregnancy Trimester, First
17.
Int J Clin Pharm ; 41(4): 1110-1117, 2019 Aug.
Article in English | MEDLINE | ID: mdl-31073974

ABSTRACT

Background The post-discharge Medicines-Use-Review (dMUR) is a commissioned service in England and Wales whereby community pharmacists facilitate patients' understanding of their medicines and resolve any medicine-related problems. This service is poorly utilised. Objective To explore the impact of raising hospital patients' awareness of dMURs on their uptake. Setting Hospital in South East England. Method Patients on medical wards with at least one change (medicine, or dose regimen) to their admission medicines were provided with standardized written and verbal information about the service. Participants were responsible for their own medicines and anticipated that they would be discharged home. Structured telephone interviews conducted 4 weeks after discharge explored any medicine-related issues experienced, and reasons for engaging, or not, with the dMUR service. Responses to closed questions were analysed using descriptive statistics. Responses to open questions were analysed thematically. Ethics approval was obtained. Main outcome measure Proportion of patients who received a dMUR and their motivations or barriers to accessing the service. Results Hundred patients were recruited and 84 interviewed. Their mean (SD) age was 73 (11) years. They were taking a median (range) of 9 (2-19) medicines. 67% (56/84) remembered receiving information about dMURs. Nine (11%) had attempted to make an appointment although four had not received the service because the pharmacist was unavailable. Most (88%) were not planning to access the service. The most common reason given was poor morbidity or mobility (13/31, 42%). Conclusion The use of written and verbal information to encourage patients to use the dMUR service had minimal impact.


Subject(s)
Community Pharmacy Services/statistics & numerical data , Health Services Accessibility/statistics & numerical data , Medication Reconciliation , Patient Discharge , Patient Participation/psychology , Aged , Cross-Sectional Studies , England , Female , Humans , Male , Patient Education as Topic , Telephone , Wales
18.
J Pediatr ; 209: 61-67.e2, 2019 06.
Article in English | MEDLINE | ID: mdl-30952508

ABSTRACT

OBJECTIVE: To examine the association between cesarean delivery and healthcare utilization and costs in offspring from birth until age 7 years. STUDY DESIGN: A retrospective cohort study of singleton term births in the Canadian province of Nova Scotia between 2003 and 2007 followed until age 7 years was conducted using data from the Nova Scotia Atlee Perinatal Database and administrative health data. The main exposure was mode of delivery (cesarean delivery vs vaginal birth); the outcome was healthcare utilization and costs during the first 7 years of life. Associations were modeled using multiple regression adjusting for maternal prepregnancy weight and sociodemographic factors. RESULTS: In total, 32 464 births were included in the analysis. Compared with children born by vaginal birth, children born by cesarean delivery had more physician visits (incidence rate ratio 1.06, 95% CI 1.05-1.08) and longer hospital stays (incidence rate ratio 1.12, 95% CI 1.03-1.21) and were more likely to be high utilizers of physician visits (OR 1.23, 95% CI 1.10-1.37). Physician and hospital costs were $775 higher for children born by cesarean delivery compared with vaginal birth. CONCLUSIONS: Cesarean delivery compared with vaginal birth is associated with small but statistically significant increases in healthcare utilization and costs during the first 7 years of life.


Subject(s)
Cesarean Section/economics , Cesarean Section/statistics & numerical data , Health Care Costs , Natural Childbirth/economics , Patient Acceptance of Health Care/statistics & numerical data , Adult , Age Factors , Child , Child Development/physiology , Child, Preschool , Cohort Studies , Delivery, Obstetric/economics , Delivery, Obstetric/statistics & numerical data , Female , Gestational Age , Humans , Incidence , Infant, Newborn , Male , Nova Scotia , Pregnancy , Retrospective Studies , Sex Factors
19.
Orphanet J Rare Dis ; 14(1): 70, 2019 03 22.
Article in English | MEDLINE | ID: mdl-30902101

ABSTRACT

BACKGROUND: We describe early health services utilization for children diagnosed with medium-chain acyl-CoA dehydrogenase (MCAD) deficiency through newborn screening in Ontario, Canada, relative to a screen negative comparison cohort. METHODS: Eligible children were identified via newborn screening between April 1, 2006 and March 31, 2010. Age-stratified rates of physician encounters, emergency department (ED) visits and inpatient hospitalizations to March 31, 2012 were compared using incidence rate ratios (IRR) and incidence rate differences (IRD). We used negative binomial regression to adjust IRRs for sex, gestational age, birth weight, socioeconomic status and rural/urban residence. RESULTS: Throughout the first few years of life, children with MCAD deficiency (n = 40) experienced statistically significantly higher rates of physician encounters, ED visits, and hospital stays compared with the screen negative cohort. The highest rates of ED visits and hospitalizations in the MCAD deficiency cohort occurred from 6 months to 2 years of age (ED use: 2.1-2.5 visits per child per year; hospitalization: 0.5-0.6 visits per child per year), after which rates gradually declined. CONCLUSIONS: This study confirms that young children with MCAD deficiency use health services more frequently than the general population throughout the first few years of life. Rates of service use in this population gradually diminish after 24 months of age.


Subject(s)
Acyl-CoA Dehydrogenase/deficiency , Health Services Misuse/statistics & numerical data , Lipid Metabolism, Inborn Errors/epidemiology , Lipid Metabolism, Inborn Errors/therapy , Birth Weight , Child, Preschool , Cohort Studies , Emergency Service, Hospital/statistics & numerical data , Female , Gestational Age , Hospitalization/statistics & numerical data , Humans , Infant , Infant, Newborn , Lipid Metabolism, Inborn Errors/diagnosis , Male , Neonatal Screening , Ontario/epidemiology , Residence Characteristics , Socioeconomic Factors
20.
Eur Child Adolesc Psychiatry ; 28(11): 1499-1506, 2019 Nov.
Article in English | MEDLINE | ID: mdl-30887130

ABSTRACT

The objective of this study was to examine the relationship between pre-pregnancy maternal weight status and offspring physician visits for mental health conditions in childhood and adolescence. We conducted a population-based retrospective cohort study of singleton infants born between the years of 1989 and 1993 using a linkage of the Nova Scotia Atlee Perinatal Database with administrative health data. Offspring were followed from birth to age 18 years. Maternal weight status was categorized according to WHO body mass index cutoffs. The number of physician visits for any mental health condition, mood, anxiety, and adjustment disorders, conduct disorder, and attention-deficit hyperactivity disorder (ADHD) from age 0-18 years was determined from ICD codes in physician billings and hospital discharge abstract data. Negative binomial regression adjusting for sociodemographics, maternal psychiatric disorders and smoking was used to model the association. In total, 38,211 mother-offspring pairs were included in the cohort. Within the first 18 years of life, offspring of mothers with obesity had significantly more physician visits for any mental health condition [adjusted incidence rate ratio (IRR) 1.26, 95% CI 1.19-1.34], mood, anxiety, and adjustment disorders (IRR 1.16, 95% CI 1.07-1.25), conduct disorder (IRR 1.25, 95% CI 1.08-1.45), and ADHD (IRR 1.45, 95% CI 1.24-1.69) compared to mothers of normal weight. Associations for mood, anxiety, and adjustment disorders and conduct disorder were strongest at 13-18 years. Offspring of mothers with obesity appear to use health care for mental health conditions more frequently than offspring of normal weight mothers.


Subject(s)
Maternal Behavior/psychology , Mental Health/trends , Adolescent , Adult , Body Mass Index , Child , Child, Preschool , Female , Humans , Infant , Infant, Newborn , Male , Obesity/epidemiology , Pregnancy , Retrospective Studies
SELECTION OF CITATIONS
SEARCH DETAIL
...