Study protocol of ConquerFear-HK: a randomised controlled trial of a metacognition-based, manualised intervention for fear of cancer recurrence among Chinese cancer survivors.

INTRODUCTION: Fear of cancer recurrence (FCR) is a prevalent and frequently debilitating response to a cancer diagnosis, affecting a substantial proportion of cancer survivors. Approximately 30% of local Hong Kong Chinese cancer survivors in a recent survey reportedly experienced persistent high FCR over the first-year post-surgery. This was associated with lower levels of psychological well-being and quality of life. A manualised intervention (ConquerFear) developed primarily based on the Self-Regulatory Executive Function Model and the Rational Frame Theory, has been found to reduce FCR effectively among Caucasian cancer survivors. The intervention now has been adapted to a Chinese context; ConquerFear-HK. The primary aim of this study is to evaluate its efficacy vs a standard-survivorship-care control (BasicCancerCare) in FCR improvement in a randomised control trial (RCT). METHODS AND ANALYSIS: In this RCT, using the sealed envelope method, 174 eligible Chinese cancer survivors will be randomised to either the ConquerFear-HK or BasicCancerCare intervention. Both interventions include six sessions over 10 weeks, which will be delivered via face to face or online by trained therapists. The ConquerFear-HK intervention incorporates value classification, metacognitive therapy, attentional training, detached mindfulness and psychoeducation; BasicCancerCare includes relaxation training, dietary and physical activity consultations. Participants will be assessed at prior randomisation (baseline; T0), immediately postintervention (T1), 3 months (T2) and 6 months postintervention (T3) on the measures of FCR (Fear of Cancer Recurrence Inventory) as a primary outcome; metacognition (30-item Metacognitions Quesionnaire) and cognitive attentional syndrome (Cognitive-attentional Syndrome Questionnaire) as process outcomes; psychological distress (Hospital Anxiety and Depression Scale), cancer-related distress (Chinese Impact of Events Scale), quality of life (European Organisation for Research and Treatment of Cancer Quality of Life Core Questionnaire) and treatment satisfaction are secondary outcomes. ETHICS AND DISSEMINATION: Ethics approval has been obtained from HKU/HA HKW Institutional Review Board (ref: UW19-183). The patients/participants provide their written informed consent to participate in this study. The study results will be disseminated through international peer-review publications and conference presentations. TRIAL REGISTRATION NUMBER: NCT04568226.

Key process features of personalized diet counselling in metabolic syndrome: secondary analysis of feasibility study in primary care.

BACKGROUND: Personalized diet counselling, as part of lifestyle change programs for cardiometabolic risk conditions (combinations of prediabetes or type 2 diabetes, hypertension, dyslipidemia and high waist circumference) has been shown to reduce progression to type 2 diabetes overall. To identify key process of care measures that could be linked to changes in diet, we undertook a secondary analysis of a Canadian pre-post study of lifestyle treatment of metabolic syndrome (MetS). Diet counselling process measures were documented and association with diet quality changes after 3 months were assessed. Results of the primary study showed 19% reversal of MetS after 1 year. METHODS: Registered dietitians (RDs) reported on contact time, specific food behaviour goals (FBG), behaviour change techniques (BCT; adapted from the Michie CALO-RE taxonomy) and teaching resources at each contact. Diet quality was measured by 2005 Canadian Healthy Eating Index (HEI-C) and assessed for possible associations with individual BCT and FBG. RESULTS: Food behaviour goals associated with improved HEI-C at 3 months were: poultry more than red meat, increased plant protein, increased fish, increased olive oil, increased fruits and vegetables, eating breakfast, increased milk and alternatives, healthier fats, healthier snacks and increased nuts, with an adverse association noted for more use (> 2 times/ 3 months) of the balanced meal concept (F test; p < 0.001). Of 16 BCT, goal setting accounted for 15% of all BCT recorded, yet more goal setting (> 3 times/3 months) was associated with poorer HEI-C at 3 months (F test; p = 0.007). Only self-monitoring, feedback on performance and focus on past success were associated with improved HEI-C. CONCLUSIONS: These results identify key aspects of process that impact diet quality. Documentation of both FBG and BCT is highly relevant in diet counselling and a summary diet quality score is a promising target for assessing short-term counselling success.

Secondary forest fragments offer important carbon and biodiversity cobenefits.

Tropical forests store large amounts of carbon and high biodiversity, but are being degraded at alarming rates. The emerging global Forest and Landscape Restoration (FLR) agenda seeks to limit global climate change by removing carbon dioxide from the atmosphere through the growth of trees. In doing so, it may also protect biodiversity as a free cobenefit, which is vital given the massive shortfall in funding for biodiversity conservation. We investigated whether natural forest regeneration on abandoned pastureland offers such cobenefits, focusing for the first time on the recovery of taxonomic diversity (TD), phylogenetic diversity (PD) and functional diversity (FD) of trees, including the recovery of threatened and endemic species richness, within isolated secondary forest (SF) fragments. We focused on the globally threatened Brazilian Atlantic Forest, where commitments have been made to restore 1 million hectares under FLR. Three decades after land abandonment, regenerating forests had recovered ~20% (72 Mg/ha) of the above-ground carbon stocks of a primary forest (PF), with cattle pasture containing just 3% of stocks relative to PFs. Over this period, SF recovered ~76% of TD, 84% of PD and 96% of FD found within PFs. In addition, SFs had on average recovered 65% of threatened and ~30% of endemic species richness of primary Atlantic forest. Finally, we find positive relationships between carbon stock and tree diversity recovery. Our results emphasize that SF fragments offer cobenefits under FLR and other carbon-based payments for ecosystem service schemes (e.g. carbon enhancements under REDD+). They also indicate that even isolated patches of SF could help to mitigate climate change and the biodiversity extinction crisis by recovering species of high conservation concern and improving landscape connectivity.

The role of metacognition and its indirect effect through cognitive attentional syndrome on fear of cancer recurrence trajectories: A longitudinal study.

OBJECTIVE: This longitudinal study mapped distinct trajectories of fear of cancer recurrence (FCR) over 12 months among patients with breast (BC) or colorectal (CRC) cancer, and examined if metacognition, indirectly via attentional bias, intrusive thoughts and avoidance (hallmarks of cognitive attentional syndrome; CAS) predicted FCR trajectory membership. METHODS: Two hundred and seventy BC (n = 163) or CRC (n = 107) patients were assessed at 8-weeks, 3-, 6-, and 12-months postsurgery on a measure of FCR (FCRI-SF). Metacognition (MCQ-30), Intrusive and Avoidant Thoughts (CIES-R) and attentional bias (dot-probe tasks) were assessed at baseline. Latent growth mixture modeling identified FCR trajectories. Fully-adjusted Multinomial Logistic Regression identified whether direct and indirect effects of metacognition through CAS determined FCR trajectory membership. RESULTS: Three distinct FCR trajectories were identified, namely, low-stable (62.4%), high-stable (29.2%), and recovery (8.3%). Negative beliefs about worry, cognitive confidence, and age predicted FCR trajectories (χ2 (6) = 38.31, P<.001). Compared with Low-stable group, Recovery FCR patients held greater Negative beliefs about worry (OR = 1.13, P = .035) and High-stable FCR patients reported poorer Cognitive confidence (OR = 1.12, P = .004). The effect of Negative beliefs about worry was partially mediated by avoidance (ß = .06, 95% CIs 0.03-0.12) and fully mediated by intrusive thoughts (ß = .14, 95% CIs 0.08-0.20). Attentional bias did not predict FCR trajectories. CONCLUSIONS: While most patients experienced low level of FCR, 3 in 10 persistently worried about cancer returning over the first 12-months postsurgery. Modifying metacognitive knowledge to interrupt maladaptive cognitive processing including intrusion and avoidance may be an effective therapeutic intervention for patients at risk of persistent FCR.

Fear of cancer recurrence among Chinese cancer survivors: Prevalence and associations with metacognition and neuroticism.

OBJECTIVE: Fear of cancer recurrence (FCR) represents a chronic burden for many cancer survivors. We determined FCR prevalence and potential correlates, specifically metacognitive styles and neuroticism among Chinese cancer survivors with breast or colorectal cancer. METHODS: This study included 285 Chinese patients with breast (N = 173) and colorectal (N = 112) cancers at 8-week postsurgery. Participants completed a set of baseline questionnaires evaluating FCR (Fear of Cancer Recurrence Inventory-Short Form [FCRI-SF]), metacognition (Metacognitions Questionnaire-30), and neuroticism (Eysenck Personality Questionnaire). Scores of 13 to 21 were indicative of subclinical FCR on the FCRI-SF. Scores greater than or equal to 22 indicated clinically significant levels of FCR. Fully adjusted multinomial logistic regressions identified correlates of subclinical and clinically significant FCR. RESULTS: Respectively, 26.0% (n = 74) and 11.2% (n = 32) achieved scores indicating subclinical and clinically significant FCR. Expressing significantly more positive (OR = 1.21, P = .003) and negative (OR = 1.19, P = .005) beliefs about worry was associated with a higher likelihood of reporting subclinical FCR. Both higher neuroticism (OR = 1.28, P = .003) and more negative beliefs about worry (OR = 1.19, P = 0.035) were associated with an increased likelihood of experiencing clinically significant FCR. CONCLUSIONS: Positive and negative metacognitions may play an important role in the development of subclinical FCR. In particular, negative metacognition and neuroticism may elevate FCR from subclinical to a clinical level. The findings give insight into the identification of cancer survivors with subclinical or clinical FCR and aid the development of interventions aimed at changing metacognitive beliefs in order to manage FCR.

Characteristics of Fentanyl Overdose - Massachusetts, 2014-2016.

Opioid overdose deaths in Massachusetts increased 150% from 2012 to 2015 (1). The proportion of opioid overdose deaths in the state involving fentanyl, a synthetic, short-acting opioid with 50-100 times the potency of morphine, increased from 32% during 2013-2014 to 74% in the first half of 2016 (1-3). In April 2015, the Drug Enforcement Agency (DEA) and CDC reported an increase in law enforcement fentanyl seizures in Massachusetts, much of which was believed to be illicitly manufactured fentanyl (IMF) (4). To guide overdose prevention and response activities, in April 2016, the Massachusetts Department of Public Health and the Office of the Chief Medical Examiner collaborated with CDC to investigate the characteristics of fentanyl overdose in three Massachusetts counties with high opioid overdose death rates. In these counties, medical examiner charts of opioid overdose decedents who died during October 1, 2014-March 31, 2015 were reviewed, and during April 2016, interviews were conducted with persons who used illicit opioids and witnessed or experienced an opioid overdose. Approximately two thirds of opioid overdose decedents tested positive for fentanyl on postmortem toxicology. Evidence for rapid progression of fentanyl overdose was common among both fatal and nonfatal overdoses. A majority of interview respondents reported successfully using multiple doses of naloxone, the antidote to opioid overdose, to reverse suspected fentanyl overdoses. Expanding and enhancing existing opioid overdose education and prevention programs to include fentanyl-specific messaging and practices could help public health authorities mitigate adverse effects associated with overdoses, especially in communities affected by IMF.

The Impact of the Oncotype DX Breast Cancer Assay on Treatment Decisions for Women With Estrogen Receptor-Positive, Node-Negative Breast Carcinoma in Hong Kong.

BACKGROUND: The Oncotype DX Breast Cancer Assay is validated to assess risk of distant recurrence and likelihood of chemotherapy (CT) benefit in estrogen receptor-positive ESBC in various populations. In Hong Kong, > 80% of breast cancers are early stage breast cancer (ESBC) and > 60% of these women receive CT. This prospective study measured changes in CT type and recommendations, as well as physician impression of assay impact in a homogenous Chinese population. METHODS: Consecutive patients with estrogen receptor-positive, T1-3 N0-1mi M0 ESBC were offered enrollment. After surgery, physicians discussed treatment options with patients, then ordered the assay, then reassessed treatment recommendation considering assay results. Changes in treatment recommendation, CT utilization, physician confidence, and physician rating of influence on their treatment recommendations were measured. RESULTS: A total of 146 evaluable patients received pre- and post-testing treatment recommendations. CT recommendations (including changes in intensity of CT) were changed for 34 of 146 patients (23.3%; 95% confidence interval, 16.7%-31.0%); change in intensity occurred in 7 of 146 (4.8%). There were 27 changes in treatment recommendations of adding or removing CT altogether (18.5% change; 95% confidence interval, 12.6%-25.8%). CT recommendations decreased from 52.1% to 37.7%, a net absolute reduction of 14.4% (P < .001; 27.6% net relative reduction). Pre-assay, 96% of physicians agreed/strongly agreed that they were confident in their treatment recommendation; post-assay, 90% of physicians agreed/strongly agreed with the same statement. Thirty percent of physicians agreed/strongly agreed that the test had influenced their recommendation, similar to the proportion of changed recommendations. CONCLUSIONS: The Oncotype DX Assay appears to influence physician ESBC adjuvant treatment recommendations in Hong Kong.

Effectiveness of Using Cellular Phones to Transmit Real-Time Shelter Morbidity Surveillance Data After Hurricane Sandy, New Jersey, October to November, 2012.

Timely morbidity surveillance of sheltered populations is crucial for identifying and addressing their immediate needs, and accurate surveillance allows us to better prepare for future disasters. However, disasters often create travel and communication challenges that complicate the collection and transmission of surveillance data. We describe a surveillance project conducted in New Jersey shelters after Hurricane Sandy, which occurred in November 2012, that successfully used cellular phones for remote real-time reporting. This project demonstrated that, when supported with just-in-time morbidity surveillance training, cellular phone reporting was a successful, sustainable, and less labor-intensive methodology than in-person shelter visits to capture morbidity data from multiple locations and opened a two-way communication channel with shelters. (Disaster Med Public Health Preparedness. 2015;10:525-528).

Cancer Among Children With Perinatal Exposure to HIV and Antiretroviral Medications--New Jersey, 1995-2010.

BACKGROUND: Concerns remain regarding the cancer risk associated with perinatal antiretroviral (ARV) exposure among infants. No excessive cancer risk has been found in short-term studies. METHODS: Children born to HIV-infected women (HIV-exposed) in New Jersey from 1995 to 2008 were identified through the Enhanced HIV/AIDS Reporting System and cross-referenced with data from the New Jersey State Cancer Registry to identify new cases of cancer among children who were perinatally exposed to ARV. Matching of individuals in the Enhanced HIV/AIDS Reporting System to the New Jersey State Cancer Registry was conducted based on name, birth date, Social Security number, residential address, and sex using AutoMatch. Age- and sex-standardized incidence ratio (SIR) and exact 95% confidence intervals (CIs) were calculated using New Jersey (1979-2005) and US (1999-2009) cancer rates. RESULTS: Among 3087 children (29,099 person-years; median follow-up: 9.8 years), 4 were diagnosed with cancer. Cancer incidence among HIV-exposed children who were not exposed to ARV prophylaxis (22.5 per 100,000 person-years) did not differ significantly from the incidence among children who were exposed to any perinatal ARV prophylaxis (14.3 per 100,000 person-years). Furthermore, the number of cases observed among individuals exposed to ARV did not differ significantly from cases expected based on state (SIR = 1.21; 95% CI: 0.25 to 3.54) and national (SIR = 1.27; 95% CI: 0.26 to 3.70) reference rates. CONCLUSIONS: Our findings are reassuring that current use of ARV for perinatal HIV prophylaxis does not increase cancer risk. We found no evidence to alter the current federal guidelines of 2014 that recommend ARV prophylaxis of HIV-exposed infants.

Psychometric assessment of the Chinese version of the decisional conflict scale in Chinese women making decision for breast cancer surgery.

OBJECTIVE: The decisional conflict scale (DCS) measures the perception of uncertainty in choosing options, factors contributing to decision conflict and effective decision making. This study examined the validity and reliability of the Chinese version of the DCS in Hong Kong Chinese women deciding breast cancer (BC) surgery. METHOD: A Chinese version of the 16-item DCS was administered to 471 women awaiting initial consultation for BC diagnosis. Confirmatory factor analysis (CFA) assessed the factor structure. Internal consistency, and convergent and discriminant validities of the factor structure were assessed. RESULTS: CFA revealed the original factor structure of the DCS showed poor fit to this sample. Exploratory factor analysis revealed an alternative three-factor structure, Informed and Values Clarity, Uncertainty and Effective Decision and Support, was optimal. Cronbach's alpha ranged from 0.51 to 0.87. Correlations between decision-making difficulties and satisfaction with medical consultation demonstrated acceptable convergent validity. Construct validity was supported by correlations between decision regret and psychological distress. Discriminant validity was supported by differentiation between delaying and non-delaying decision-makers. CONCLUSIONS: The three-factor DCS-14 is a valid and practical measure for assessing decisional conflict in deciding BC surgery. It shows good potential for use in assessing decision satisfaction for women diagnosed with BC.

Communicative characteristics of interactions between surgeons and Chinese women with breast cancer in oncology consultation: a conversation analysis.

BACKGROUND: While previous studies have analysed features of interaction in cancer consultations using observational coding frames, relatively little attention is being given to how actual interactions are sequentially organized and achieved by participants in the course of talk-in-interaction. Research into the interactional practices in consultations, which involves Chinese patients, is largely absent. OBJECTIVE: To provide insight into the talk-in-interaction in surgical-oncology consultations in the context of a Chinese medical setting. METHODS: Thirty-one consultations involving 31 patients with breast cancer and eight surgeons were videotaped. The recordings were transcribed verbatim and analysed using conversation analysis. RESULTS: The manner in which surgeons delivered the diagnostic results was fairly similar across all the consultations. Most surgeons gave the diagnosis in a very straightforward and abrupt manner at the outset of the consultation with no mitigation. While patients in our study conformed to the traditional information giving and receiving roles, how information was presented by surgeons shaped the subsequent sequential organization of surgeon-patient interaction and turn-taking patterns. More importantly, there was a tendency by the surgeons to move from issues of psychosocial nature to clinical matters regardless of the topics taken up in the specific encounter. CONCLUSIONS: This study demonstrated the potential of conversation analysis as a context-sensitive method that enabled researchers to gain a more thorough understanding of dynamics of interaction in cancer consultations, thereby informing training interventions for surgeons. Our findings underscore the importance of discursive practices in shaping and encouraging (or discouraging) patient participation in oncology consultation.

Risk factors and natural history of breast cancer in younger Chinese women.

AIM: To investigate the age differences in the risk factors, clinicopathological characteristics and patterns of treatment of female breast cancer patients. METHODS: Seven thousand one hundred and fifty-two women with primary breast cancer from the Hong Kong Breast Cancer Registry were recruited after receiving patients' consent, they were asked to complete standardized questionnaires which captured their sociodemographic characteristics and risk factors associated with breast cancer development. Among them, clinicopathological data and patterns of treatment were further collected from medical records of 5523 patients with invasive breast cancers. Patients were divided into two groups according to the age at diagnosis: younger (< 40 years old) vs older patients (≥ 40 years old) for subsequent analyses. RESULTS: Analysis on the sociodemographic characteristics and exposure to risk factors were performed on 7152 women with primary breast cancer and the results revealed that younger patients were more likely to have unhealthy lifestyles; these include a lack of exercise (85.4% vs 73.2%, P < 0.001), having high stress in life (46.1% vs 35.5%, P < 0.001), having dairy/meat-rich diets (20.2% vs 12.9%, P < 0.001), having alcohol drinking habit (7.7% vs 5.2%, P = 0.002). Younger patients were also more likely to have hormone-related risk factors including nulliparity (43.3% vs 17.8%, P < 0.001) and an early age at menarche (20.7% vs 13.2%, P < 0.001). Analyses on clinicopathological characteristics and patterns of treatment were performed on 5523 women diagnosed with invasive breast cancer. The invasive tumours in younger patients showed more aggressive pathological features such as having a higher percentage of grade 3 histology (45.7% vs 36.5%, P < 0.001), having a higher proportion of tumours with lymphovascular invasion (39.6% vs 33.2%, P = 0.003), and having multifocal disease (15.7% vs 10.3%, P < 0.001); they received different patterns of treatment than their older counterparts. CONCLUSION: Younger patients in Hong Kong are more likely to encounter risk factors associated with breast cancer development and have more aggressive tumours than their older counterparts.

Does the use of shared decision-making consultation behaviors increase treatment decision-making satisfaction among Chinese women facing decision for breast cancer surgery?

OBJECTIVE: To assess the extent to which breast surgical consultations used shared decision making (SDM), identify factors associated with use of SDM, and assess if using SDM increases decision-making satisfaction. METHODS: Two hundred and eighty-three video-recorded diagnostic-treatment decision consultations between breast surgeons and women with breast cancer were assessed using the Decision Analysis System for Oncology (DAS-O) coding system designed for assessing SDM behaviors. Women completed a questionnaire at pre-consultation, one-week post-consultation and one-month post-surgery. Patient outcomes included decision conflict, patient satisfaction with medical consultation, and decision regret. RESULTS: Overall, the level of SDM behaviors was low. The extent of SDM behavior within consultation was related to greater consultation duration (p<0.001), more than one treatment being offered (p<0.001), and fewer questions raised by patients/companions (p<0.05). While use of SDM consultation did not influence post-consultation decision conflict, it increased satisfaction with information given and explained, patients' feelings of trust and confidence in their surgeons, and reduced post-surgical decision regret. CONCLUSION: These breast surgical consultations mostly adopted informed treatment decision-making approaches. Using SDM improved patient consultation and decision satisfaction. PRACTICE IMPLICATIONS: The study findings highlight a need to reinforce the importance of SDM in consultations among breast surgeons.

Reducing treatment decision conflict difficulties in breast cancer surgery: a randomized controlled trial.

PURPOSE: Breast cancer (BC) decision aid (DA) randomized studies are limited to DA use in consultations among Western populations and for primary surgery. Their effectiveness beyond consultations, for reconstructive surgery and in other populations, has not been evaluated. We developed a DA administered after consultation for Chinese women deciding on BC surgery and, where relevant, immediate breast reconstruction, which was evaluated in this randomized controlled trial (RCT). PATIENTS AND METHODS: Overall, 276 women considering BC surgery for early-stage BC were randomly assigned to receive a DA (take-home booklet) or the standard information booklet (control condition) after the initial consultation, wherein surgeons disclosed the diagnosis and discussed treatment options with patients. Using block random assignment by week, 138 women were assigned to the DA arm and 138 to the control arm. Participants completed interview-based questionnaires 1 week after consultation and then 1, 4, and 10 months after surgery. Primary outcome measures were decisional conflict, decision-making difficulties, BC knowledge 1 week after consultation, and decision regret 1 month after surgery. Secondary outcome measures were treatment decision, decision regret 4 and 10 months after surgery, and postsurgical anxiety and depression. RESULTS: The DA group reported significantly lower decisional conflict scores 1 week after consultation (P = .016) compared with women in the control arm. Women receiving the DA had significantly lower decision regret scores 4 (P = .026) and 10 months (P = .014) after surgery and lower depression scores 10 months after surgery (P = .001). CONCLUSION: This RCT demonstrated DAs may benefit Chinese patients in Hong Kong by reducing decisional conflict and subsequent regret and enhance clinical services for this population.

Waiting to see the doctor: understanding appraisal and utilization components of consultation delay for new breast symptoms in Chinese women.

BACKGROUND: Delayed consultation for potential cancer symptoms influences treatment outcomes and remains problematic. Delay components (Appraisal versus Utilization) and respective associations are poorly understood. METHODS: Eligible participants were Cantonese-speaking Chinese women, ≥21 years old, with self-discovered breast symptoms, recruited in surgical clinics before their first consultation, and naïve to their diagnosis. Overall 425/433 (98%) women completed a questionnaire on psychosocial, demographic and medical factors, how and when women discovered their breast symptom(s), and their subsequent decision making; 135/425 women (32%) were later diagnosed with breast cancer. RESULTS: Twenty-two per cent of women delayed >3 months before consultation. Women with breast cancer (28%) more often had prolonged delay than women with benign disease (19%). Attributing symptom to a non-cancerous condition, low fear on symptom discovery, not disclosing symptoms to others, and no prior breast symptom history predicted prolonged (>60 days) Appraisal Delay. Low fear on symptom discovery, seldom thinking about the symptom, and consultation for other reasons predicted prolonged (>14 days) Utilization Delay. Factors predicting Appraisal and Utilization Delays differentiated cancer from non-cancer groups. CONCLUSIONS: Indecision over symptom meaning comprised the main component of Appraisal and Total Delay, suggesting that educational strategies targeting atypical symptoms should reduce avoidable delays following self-discovered breast symptoms.

The incubation periods of Dengue viruses.

Dengue viruses are major contributors to illness and death globally. Here we analyze the extrinsic and intrinsic incubation periods (EIP and IIP), in the mosquito and human, respectively. We identified 146 EIP observations from 8 studies and 204 IIP observations from 35 studies. These data were fitted with censored Bayesian time-to-event models. The best-fitting temperature-dependent EIP model estimated that 95% of EIPs are between 5 and 33 days at 25°C, and 2 and 15 days at 30°C, with means of 15 and 6.5 days, respectively. The mean IIP estimate was 5.9 days, with 95% expected between days 3 and 10. Differences between serotypes were not identified for either incubation period. These incubation period models should be useful in clinical diagnosis, outbreak investigation, prevention and control efforts, and mathematical modeling of dengue virus transmission.

Trajectories of body image and sexuality during the first year following diagnosis of breast cancer and their relationship to 6 years psychosocial outcomes.

We examined degree and determinants of change in body image and sexuality over the first year following breast cancer diagnosis to differentiate body image and sexuality trajectories, and then explored if differences in trajectories predicted 6 years' psychosocial outcomes. 363/405 (90%) Chinese women receiving surgery for BC were assessed at 5-days (Baseline), 1-month, 4-months, and 8-months post-surgery. Psychological distress, treatment decision making (TDM) difficulties, satisfaction with treatment outcome, optimism, and self-efficacy were assessed at Baseline. Self-image and sexuality were recorded at each follow-up assessment. Latent growth mixture modeling identified trajectories of self-image and sexuality. Multinominal logistic regression identified factors predicting trajectory patterns. Six years later 211/363 (58%) of the original patients were successfully traced and their psychosocial status assessed. Three distinct trajectories of self-image and sexuality were identified: high-stable, recovery, and high-deteriorating. Most women (64% self-image; 58% sexuality) showed stable levels of self-image and sexuality scores. TDM difficulties, satisfaction with treatment outcomes, physical symptom and psychological distress predicted trajectory patterns. Self-image trajectories over the first year diagnosis predicted 6-years psychosocial outcomes. Women with high-stable level of self-image had the best 6-year self-image and sexuality; women with initial low level of self-image had significantly greater long-term psychological distress. Low TDM difficulties and high treatment outcome satisfaction predicted high and stable self-image and sexuality. Type of surgery showed little impacts on self-image and sexuality. Self-image during acute illness phase predicted long-term outcomes. Interventions should focus on minimizing self-image decrement.

Intra-operative assessment of axillary sentinel lymph nodes by frozen section-an observational study of 260 procedures.

BACKGROUND: Sentinel lymph node biopsy (SLNB) has become the standard treatment for patients with invasive breast cancer. Intra-operative frozen section allows for the detection of nodal metastases, thereby allowing a simultaneous axillary lymph node dissection (ALND) for those patients with nodal metastases. We herein report the accuracy of frozen section in the detection of SLN metastases. METHODS: Patients with operable breast cancer and clinically negative axillae were recruited for SLNB. The SLNs were identified by blue dye, an isotope, or a combination. Enlarged lymph nodes that were not SLNs were also excised. All nodes were examined by intra-operative frozen section. ALND was performed if frozen section was positive. For those without metastases on frozen section, ALND was not performed. All lymph nodes underwent further paraffin sectioning with immuno-histochemical staining. RESULTS: A total of 260 SLNB procedures were performed for invasive carcinoma over a 3-year period. The SLN was identified in 93.5% of patients. Of the 243 successful procedures, 53 had nodal metastases on frozen section. A total of 33 patients had false-negative frozen sections (false-negative rate, 38.4%), and 97% of them were less than 2 mm in size. The false-negative rate for macro-metastases, micro-metastases, and isolated tumour cells_were 2.4%, 57.7%, and 94.4%, respectively (p < 0.0001). A total of 22 patients had delayed ALND, and the re-operation rate was 8.5%. CONCLUSION: Frozen section was useful for the detection of nodal metastases in the SLNs and allowed for ALND to be performed in the same operation. The main failure of frozen sections was in the detection of micro-metastases.

Development and pilot-testing of a Decision Aid for use among Chinese women facing breast cancer surgery.

BACKGROUND: Women choosing breast cancer surgery encounter treatment decision-making (TDM) difficulties, which can cause psychological distress. Decision Aids (DAs) may facilitate TDM, but there are no DAs designed for Chinese populations. We developed a DA for Chinese women newly diagnosed with breast cancer, for use during the initial surgical consultation. AIMS: Conduct a pilot study to assess the DA acceptability and utility among Chinese women diagnosed with breast cancer. METHODS: Women preferred the DA in booklet format. A booklet was developed and revised and evaluated in two consecutive pilot studies (P1 and P2). On concluding their initial diagnostic consultation, 95 and 38 Chinese women newly diagnosed with breast cancer received the draft and revised draft DA booklet, respectively. Four-day post-consultation, women had questionnaires read out to them and to which they responded assessing attitudes towards the DA and their understanding of treatment options. RESULTS: The original DA was read/partially read by 66/22% (n = 84) of women, whilst the revised version was read/partially read by 74/16% (n = 35), including subliterate women (χ(2) = 0.76, P = 0.679). Knowledge scores varied with the extent the booklet was read (P1: F = 12.68, d.f. 2, P < 0.001; P2: F = 3.744, d.f. 2, P = 0.034). The revised, shorter version was graphically rich and resulted in improved perceived utility, [except for the 'treatment options' (χ(2) = 5.50, P = 0.019) and 'TDM guidance' (χ(2) = 8.19, P = 0.004) sections] without increasing anxiety (F = 0.689, P = 0.408; F = 3.45, P = 0.073). CONCLUSION: The DA was perceived as acceptable and useful for most women. The DA effectiveness is currently being evaluated using a randomized controlled trial.

Isotope-guided surgery for nonpalpable breast cancer.

BACKGROUND: The hook-wire technique is used to guide surgical excision of nonpalpable breast lesions. Recently, isotope has been used to guide the excision, and when sentinel node biopsy is performed during the same operation, the procedure is termed Sentinel Node and Occult Lesion Localization (SNOLL). We evaluated the use of this procedure for nonpalpable cancers in Chinese women. METHODS: Seventy-four patients underwent SNOLL before breast-conserving surgery. Intratumoral injection of sulfur colloid and lymphoscintigraphy (LSG) were performed. A gamma probe was used for resection planning and localization of the sentinel node (SN). Blue dye mapping was used in patients with negative LSG. Complete excision was defined as a tumor-free margin greater than 1 mm. RESULTS: The primary breast lesion was successfully removed in 73 patients (99%). Complete excision was achieved in 61 patients (82%). Drainage to axilla was detected by LSG in 53 patients (72%). The gamma probe was more sensitive than LSG and had an 82% SN identification rate. Patients with a positive LSG had a higher chance of SN localization by gamma probe than patients with a negative LSG (100% vs. 38%, p < 0.001). In patients with a negative LSG, supplementary blue dye mapping increased the SN localization rate from 38 to 90%. The SN identification rate was 97% in the whole series. CONCLUSION: Isotope-guided surgery was reliable, with a 99% localization rate for nonpalpable breast lesions and an 82% SN localization rate. The success rate of SN identification could be improved to 97% with the addition of blue dye mapping for patients with negative drainage on lymphoscintigraphy.