[Effects on mortality and morbidity among the population living close to the Valmadrera (Lombardy Region, Northern Italy) incinerator]. / Effetti sulla mortalità e morbilità nella popolazione residente nei pressi dell'inceneritore di Valmadrera (LC).

OBJECTIVES: assessment of the health effects on the resident population around the incinerator for municipal solid waste in Valmadrera (Lombardy Region, Northern Italy) in relation to the exposure level to the pollutants produced by the plant. DESIGN: historical cohort study, based on the resident population from 2003 to 2016 in the study area. With a dispersion model, based on PM10 emitted by the plant, three areas of exposure (high, medium, low) were defined and, on the basis of the residence of the cohort, different exposure levels were attributed to the subjects. The association between level of exposure and health effects were estimated by comparing the high and medium exposure levels with the low exposure level, using a Cox model, adjusted for age and socioeconomic deprivation index. MAIN OUTCOME MEASURES: mortality rates, hospitalization rates, cancer incidence rates, and perinatal outcomes were analysed for the main causes potentially associated with exposure to incineration plants. RESULTS: the subjects enrolled in the cohort were 106,056 (1,000,242 person-years). There were no statistically significant excesses of risk for almost all the outcomes investigated. Excessive mortality and hospitalization were found for liver/biliary cancers (HR women: 2.57; 95%CI 1.15-2.79; HR men: 2.22; 95%CI 1.10-4, 84). In the municipality where the plant is located, an excess prevalence (OR 1.78; 95%CI 1.43-2.21) of hepatitis C was found. CONCLUSIONS: the results suggest the absence of a relationship between residence in areas with different levels of pollutants emitted by the plant and the onset of almost all diseases. The associated causes do not have aetiological plausibility with exposure to pollutants from waste incineration. In particular, for liver/liver and biliary cancer, the association with infectious causes rather than exposure to environmental pollutants is more plausible.

Maternal childbirth-related mortality in the last 40 years in Turin, Italy: the impact of universal health coverage on inequalities in a developed country.

The aim of this study was to investigate social disparities in childbirth-related mortality in women (CRM) in Italy during 1972-2013, a period characterised by important changes in the organisation of healthcare services. The relationship between education and CRM was assessed using a Poisson regression model adjusted for age, area of birth and year of delivery.The risk of dying from childbirth related causes was more than double for less educated women when compared to women with better education (RR 2.3; 95% CI 1.1-3.9). CMR was almost 2.5 times higher in 1971-1979 than in the universalistic coverage period (1980-2013): RR 2.6, 95% CI 1.4-4.6. CMR in Turin has decreased in the last 40 years and this success is probably the result of the development of our public health system and of specific health facilities for pregnant women but free access to maternal care alone is not sufficient to erase inequalities.IMPACT STATEMENTWhat do we already know? Mother mortality due to childbirth-related causes has significantly decreased in the last 40 years and the development of the public health system is likely to have contributed to this success.What do the results of this study add? This study shows that, although there has been good progress in pregnancy and partum assistance, inequalities in the incidence of mortality from childbirth-related causes still exists even in a high-income country such as Italy.What are the implications of these findings for clinical practice and/or further research? The results are useful both for clinicians and for policy-makers as it suggests that the assessment of socioeconomic factors should be taken into account by clinicians along with other risk factors. Furthermore, community interventions targeted at more vulnerable women should be implemented to improve the use of healthcare and pre-partum facilities.

New insights on occupational exposure and bladder cancer risk: a pooled analysis of two Italian case-control studies.

PURPOSE: The main risk factor for bladder cancer (BC) is cigarette smoking, but also occupational exposure to carcinogens is relevant, causing about 4-10% of BC. We aimed at investigating the association between BC risk, occupations held in the past and exposure to occupational carcinogens, also assessing whether these associations were influenced by tumour grade. METHODS: We pooled data from two Italian case-control studies on male BC, analyzing 893 cases and 978 controls. Occupations were classified using the International Standard Classification of Occupations and exposure to carcinogens was assigned using a validated Job Exposure Matrix. Logistic regression approach was used as well as a semi-Bayesian model, based on a priori information on exposure. RESULTS: A significantly increased BC risk was found for chemical engineering technicians, postmen, and lathe operators, but only, for the latter, the association remained significant after Bayesian control for type I error. Among carcinogens, cadmium and trichloroethylene were associated with BC. When analyzing data by grade, exposure to these carcinogens was associated with low-grade BC only. CONCLUSIONS: Our results suggest that monitoring workplaces to prevent exposure to carcinogenic agents is still an important task, which should be still given adequate importance in public health.

Incidence of hospitalization and mortality in patients with diabetic foot regardless of amputation: a population study.

AIMS: The aim of our study was to estimate the overall rate of first hospitalizations for diabetic foot (DF) regardless of the outcome in amputations, as well as the mortality rate with their determinants in the period 2012-2016 in Piedmont Region in Italy. METHODS: The study included all the subjects registered in the Regional Diabetes Registry and alive as at January 1, 2012. DF cases were identified by record linkage with the regional hospital discharge database. Incident cases of diabetic foot were followed up for mortality. RESULTS: The 5-year rates were 1762, 324, and 343 × 100,000 patients for first hospitalization without amputations, with major amputations, and with minor amputations, respectively. Patients not undergoing amputations were more than 70% of the cohort. Patients with the more severe stages of diabetes and those with low education were at higher risk of each type of hospitalization. The risk of death during a mean follow-up of 2.5 years was about 16, 18, and 30% among patients without amputations, with major amputations, and with minor amputations, respectively. Males, insulin-treated patients, those affected with severe diabetes complications, particularly on dialysis, and those with lower levels of education were at higher risk. CONCLUSIONS: The heavier burden of DF on hospitalizations is due to cases without amputation, a condition that is seldom considered in the diabetes literature. The severity of diabetes, preexisting complications, and low educational levels are associated with both first hospitalization and subsequent survival at any level of severity of DF.

The contribution of behavioural and metabolic risk factors to socioeconomic inequalities in mortality: the Italian Longitudinal Study.

OBJECTIVES: The aim of this study was to assess social inequalities in overall mortality in a representative sample of the Italian population, and to evaluate the contribution of behavioural and metabolic risk (BMF) factors to these inequalities. METHODS: 85,308 participants aged 25-74 years from the Italian Longitudinal Study were included in the study population and followed up for mortality (1999-2012). Level of education was used as a proxy for socioeconomic status. The contribution of BMF was estimated assessing the attenuation of the risk by education produced by the inclusion of BMF in regression model. RESULTS: Men with the lowest education had 62% and women had 57% greater risk of dying than those with the highest education. Among men, adjustment for BMF produced an attenuation of the mortality risk between extreme classes of education by 22%, while among women the risk attenuation was 7%. CONCLUSIONS: Large educational differences in mortality were observed for both men and women. BMF reduced by approximately 20% differences in mortality relative risk between extreme classes of education in men. In contrast, a very low contribution was observed in women.

Ten-year comparative analysis of incidence, prognosis, and associated factors for dialysis and renal transplantation in type 1 and type 2 diabetes versus non-diabetes.

AIMS: To study the incidence of and the factors associated with renal dialysis and transplantation in type 1 (T1DM) and type 2 diabetes (T2DM). METHODS: Data on individuals who had received dialysis treatment or renal transplant between 1 January 2004 and 31 December 2013 were extracted from the regional administrative database (Piedmont, Italy), and the crude (cumulative) incidence of dialysis was calculated. Overall cumulative survival was estimated using the Kaplan-Meier method and compared using the log-rank test. Poisson regression was used to estimate adjusted rate ratios for potential predictors of renal transplant or death. RESULTS: A total of 7401 persons started dialysis treatment during the decade, with a 10-year cumulative crude incidence of 16.8/100,000. Incidence was stable and consistently eightfold higher in persons with T2DM (tenfold higher in T1DM) compared to those without diabetes. The risk of dialysis in T1DM was about double that of T2DM. The mortality rate was significantly higher in diabetics than in non-diabetes (241.4/1000 vs. 153.99/1000 person-years). During the decade 2004-2013, 893 patients underwent a kidney transplant. Transplantation rates were significantly lower for diabetics than non-diabetics (16.5/1000 vs. 42.9/1000 person-years). CONCLUSIONS: In the past decade, the incidence of dialysis has stabilized in both the general population and in diabetics in whom it remains far higher by comparison. Also mortality rates are higher, with a worse prognosis for T1DM. Diabetes poses a barrier to allotransplantation, and efforts should be made to overcome this limitation.

Prevalence, incidence and associated comorbidities of treated hypothyroidism: an update from a European population.

OBJECTIVE: Estimates of the prevalence of hypothyroidism in unselected populations date from the late 1990s. We present an update on the prevalence and incidence of overt hypothyroidism in Piedmont, northwest Italy and examine the association between hypothyroidism and multiple chronic comorbidities. DESIGN AND METHODS: Data were obtained from drug prescription and hospital discharge databases. Individuals who had received at least two levothyroxine prescriptions in 2012 were defined as having hypothyroidism; those who had undergone thyroidectomy or I131 irradiation in the previous 5 years were defined as having iatrogenic hypothyroidism and those who had either obtained exemption from treatment co-payment or had been discharged from hospital with a chronic comorbidity (diabetes and connective tissue diseases) were identified as having one of these conditions. RESULTS: The overall crude prevalence was 31.1/1000 (2.3/1000 for iatrogenic hypothyroidism) and the overall crude incidence was 7/1000. The average daily dose of thyroxine (122 µg) roughly corresponded to 1.7 µg/kg. There was a strong association between hypothyroidism and diabetes (type 1, type 2 or gestational) and with autoimmune diseases, with the odds ratio ranging from 1.43 (1.02-1.99) for psoriatic arthritis to 4.99 (3.06-8.15) for lupus erythematosus. CONCLUSIONS: As compared with previous estimates, the prevalence of hypothyroidism rose by about 35%, driven mainly by non-iatrogenic forms. The increase may be due to either population aging or improved diagnostic capability or both. The frequent co-occurrence of hypothyroidism with other multiple chronic conditions characterizes it more as a comorbidity rather than an isolated chronic disease.