Childhood obesity is a major public health challenge and its prevalence continues to increase in many, but not all, countries worldwide. International data indicate that the prevalence of obesity is greater among boys than girls 5–19 years of age in the majority of high and upper middle-income countries worldwide. Despite this observed sex difference, relatively few studies have investigated sex-based and gender-based differences in childhood obesity. We propose several hypotheses that may shape the research agenda on childhood obesity. Differences in obesity prevalence may be driven by gender-related influences, such as societal ideals about body weight and parental feeding practices, as well as sex-related influences, such as body composition and hormones. There is an urgent need to understand the observed sex differences in the prevalence of childhood obesity; incorporation of sex-based and gender-based analysis in all childhood obesity studies may ultimately contribute to improved prevention and treatment.

BackgroundChildhood obesity is a major public health concern. This study evaluated the independent and joint associations of family-level income, neighbourhood-level income and neighbourhood deprivation, in relation to child obesity.MethodsA cross-sectional study was conducted in children ≤12 years of age from TARGet Kids! primary care network (Greater Toronto Area, 2013–2019). Parent-reported family income was compared with median neighbourhood income and neighbourhood deprivation measured using the Ontario Marginalization Index. Children’s height and weight were measured and body mass index (BMI) z-scores (zBMI) were calculated. ORs and 95% CIs were estimated for the three exposure variables separately using multilevel multinomial logistic regression models with zBMI categories as the outcome, adjusting in model 1 for age, sex, ethnicity and number of family members and in model 2 adding family income. A joint measure was derived combining income and deprivation measures.ResultsA total of 5962 children were included. Low family income (Q1 vs Q5: OR=4.69, 95% CI 2.65 to 8.29), low neighbourhood income (Q1 vs Q5: OR=2.18, 95% CI 1.33 to 3.58) and high neighbourhood deprivation (Q1 vs Q5: OR=2.45, 95% CI 1.52 to 3.95) were each associated with increased OR of child obesity. However, after adjustment for family income, the association for both neighbourhood income (OR=1.39, 95% CI 0.82 to 2.34) and deprivation (OR=1.56, 95% CI 0.94 to 2.58) and obesity was attenuated. Children from low-income families living in low-income or high deprivation neighbourhoods had higher OR of obesity.ConclusionChild obesity was independently associated with low family-level income and a joint measure suggests that neighbourhood also matters. Socioeconomic inequalities at both individual and neighbourhood levels should be addressed in childhood obesity interventions.

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Purpose To investigate the psychometric performance and responsiveness of Catquest-9SF, a patient-reported questionnaire developed to evaluate visual function as related to daily tasks, in patients referred for cataract surgery in Ontario, Canada. Methods This is a pooled analysis on prospective data collected for previous projects. Subjects were recruited from three tertiary care centers in Peel region, Hamilton, and Toronto, Ontario, Canada. Catquest-9SF was administered pre-operative and post-operatively to patients with cataract. Psychometric properties, including category threshold order, infit/outfit, precision, unidimensionality, targeting, and differential item functioning were tested using Rasch analysis with Winsteps software (v.4.4.4) for Catquest-9SF. Responsiveness of questionnaire scores to cataract surgery was assessed. Results 934 patients (mean age = 71.6, 492[52.7%] female) completed the pre- and post-operative Catquest-9SF questionnaire. Catquest-9SF had ordered response thresholds, adequate precision (person separation index = 2.01, person reliability = 0.80), and confirmed unidimensionality. The infit range was 0.75–1.29 and the outfit range was 0.74–1.51, with one item (‘satisfaction with vision’) misfitting (outfit value = 1.51). There was mistargeting of -1.07 in pre-operative scores and mistargeting of -2.43 in both pre- and post-operative scores, meaning that tasks were relatively easy for respondent ability. There was no adverse differential item functioning. There was a mean 1.47 logit improvement in Catquest-9SF scores after cataract surgery (p<0.001). Conclusion Catquest-9SF is a psychometrically robust questionnaire for assessment of visual function in patients with cataract in Ontario, Canada. It is also responsive to clinical improvement after cataract surgery.

In a health care system with finite resources, we need appropriateness guidelines to facilitate access and planning and to prevent abuse. Cataract surgery is one of the most commonly performed procedures worldwide, with overall high patient satisfaction and societal impact. In contrast to other elective procedures, such as knee arthroscopy, where evidence is limited, there is clear visual and functional benefit for patients suffering from cataract symptoms. 1 While in principle it makes sense to have rules in place to guide appropriateness, misguided or overly simplistic rules actually could cause harm. Herein, we present some considerations in developing appropriateness guidelines.

OBJECTIVE: Interventions to address poverty and food insecurity in pediatric hospital care have been scarce. Access to government support is based on the completion of taxes. Medical-financial partnerships are defined as novel cross-sector collaborations in which health care systems and financial service organizations work collaboratively to improve health by reducing financial stress. The objective of our pilot study was to assess the feasibility of implementing a “free tax service” within a pediatric academic hospital setting. METHODS: A pilot randomized controlled trial “TAX4U” was conducted from November 2020 until April 2021 in the general inpatient setting of an academic pediatric hospital. Eligible families were randomly assigned to receive either “free tax services” according to the Canada Revenue Agency-funded Community Volunteer Income Tax Program (CVITP) or “care as usual.” RESULTS: A total of 140 caregivers filled in the 8-question recruitment survey. We found that 101 (72%) families were not eligible to participate in the study. Reasons for ineligibility were not meeting CVITP criteria (n = 59, 58%), already filed tax (n = 25, 25%), and families did not sign the consent form (n = 17, 17%). Thirty-nine families were randomly assigned, with 20 (51.3%) families assigned to the intervention and 19 (48.7%) families receiving care as usual. Ultimately, 7 (35%) families received the tax intervention. CONCLUSIONS: Offering free tax services may be feasible and reached vulnerable families in a pediatric hospital setting; however, the inclusion criteria of the CVITP program did not meet the needs of caregivers. Further research should explore offering a full-scope medical-financial partnership that meets the needs of low-income families in a hospital setting.