Background

Many elementary schools have policies requiring a minimum amount of physical education (PE). However, few schools comply with local/state PE policy and little is known about how to improve adherence. We evaluated changes in PE among fifth-grade classes, following participatory action research efforts to improve PE quantity and policy compliance that focused on publically disclosing PE data.

Methods

Data were collected in 20 San Francisco public elementary schools in spring 2011 and 2013. PE schedules were collected and PE classes were directly observed (2011, N = 30 teachers; 2013, N = 33 teachers). Data on the proportion of schools meeting state PE mandates in 2011 were shared within the school district and disclosed to the general public in 2012.

Results

From 2011 to 2013, PE increased by 11 minutes/week based on teachers' schedules (95% CI: 3.0, 19.6) and by 14 minutes/week (95% CI: 1.9, 26.0) based on observations. The proportion of schools meeting the state PE mandate increased from 20% to 30% (p = .27).

Conclusions

Positive changes in PE were seen over a 2-year period following the public disclosure of data that highlighted poor PE policy compliance. Public disclosure could be a method for ensuring greater PE policy adherence.

School-based body mass index (BMI) screening and reporting could have a positive impact on student health, but best practices for writing a report are unknown. Building on previous qualitative work, 8 focus groups were conducted with a diverse group of California parents (n = 79) to elicit feedback on report content and design. Results indicate that parents want a visually appealing, picture-heavy report that clearly defines BMI, avoids stigmatizing language, and includes recommendations for appropriate actions whole families can take. Next steps involve using the final report in a statewide, randomized trial to determine the effectiveness of school-based BMI screening and reporting in reducing childhood obesity.

Objective

In this study, we identify predictors of parental underestimation of child weight status and support for school-based BMI screening and reporting.

Methods

Parents of 3^rd through 7^th grade students (N = 1002) participating in The Fit Study completed mailed surveys assessing parent race/ethnicity, weight status, perception of child weight status, and preference for BMI screening and reporting.

Results

Only 33% and 6% of parents classified their overweight child as somewhat overweight and their obese child as very overweight, respectively. Support for BMI screening was stronger among Hispanic (OR = 2.3, p < .001), Asian (OR = 3.7, p < .001), and black (OR = 2.3, p = .04) parents than white parents and weaker among overweight versus normal-weight parents (OR = 0.6, p = .01). Compared to parents of 3^rd grade students, parents of older children reported less support for BMI reporting (4^th grade: OR = 0.4, p = .04; 6^th grade: OR = 0.3, p = .02; 7^th grade: OR = 0.3, p = .03).

Conclusions

Parent race/ethnicity, parent weight status, and child age are associated with support for BMI screening and reporting..

Background: Current evidence demonstrates that, while a widely used tool for childhood obesity prevention, school-based BMI reports do not effectively reduce pediatric obesity. The purpose of this study was to examine the presumed mechanisms by which BMI reporting might impact child weight by assessing parents': (1) recall of BMI reports, (2) accuracy in recalling child overweight status, and (3) reactions to BMI reports. Methods: Mailed surveys were completed by 2205 racially/ethnically diverse parents of third- to seventh-grade students participating in the Fit Study who had either been exposed to 1 year of child BMI reporting (one report) or 2 years (two reports). Results: After 1 year of BMI reporting, parents of children with overweight were less likely [odds ratio (OR) = 0.7, 95% confidence interval (CI): 0.5-0.9] to recall receiving a BMI report and less likely (OR = 0.2, 95% CI: 0.1-0.3) to accurately recall their child's weight status from the BMI report, compared with parents of children with healthy weight. Differences in accuracy of child weight status recall persisted after 2 years of BMI reporting exposure. Only 22% of parents of children at risk for overweight and with overweight reported being surprised by the results. Conclusions: Parents' recall of receiving a school-based BMI report is low, as is the accuracy of recall of child's overweight status. Additionally, parents' surprise at, and concern for, BMI results is limited. Current BMI reports may be ineffective at reducing pediatric obesity due to their lack of salience and ability to compel meaningful behavior change among parents.

Background

The accuracy of students' heights and weights measured by school staff for body mass index (BMI) screening/reporting has not been established. This study examined school staffs' measurement accuracy, comparing accuracy by staff- and student-level characteristics.

Methods

School staff and researchers measured the height and weight of 1008 4th-8th grade students, within 1 month of each other. Bland-Altman plots, mean differences, and intraclass correlation coefficients (ICCs) were calculated to examine measurement accuracy. Linear mixed effects models assessed accuracy by staff- and student-level characteristics.

Results

Bland-Altman plots revealed no appreciable bias in differences between researcher and staff measurements. The mean absolute difference between researcher and school staff measurements were 1.0 ± 1.6 cm (height), 0.7 ± 1.8 kg (weight), and 0.4 ± 0.8 kg/m² (BMI). Inter-rater ICC values were ≥0.97, demonstrating "excellent" reliability. Categorical weight status was correctly classified for 94% of students (kappa 0.90), and for 96% with a BMI ≥95th% (kappa 0.94). Physical education (PE) teachers were slightly less accurate than school nurses in measuring height (0.4 cm less accurate; p = .045) and weight (0.4 kg; p = .015).

Conclusions

School staff conducted height/weight measurements on 4th-8th grade students with high accuracy. Resultant school-based BMI reports using similar protocols should validly reflect weight status for almost all students.

Background: Current evidence demonstrates that, while a widely used tool for childhood obesity prevention, school-based BMI reports do not effectively reduce pediatric obesity. The purpose of this study was to examine the presumed mechanisms by which BMI reporting might impact child weight by assessing parents': (1) recall of BMI reports, (2) accuracy in recalling child overweight status, and (3) reactions to BMI reports. Methods: Mailed surveys were completed by 2205 racially/ethnically diverse parents of third- to seventh-grade students participating in the Fit Study who had either been exposed to 1 year of child BMI reporting (one report) or 2 years (two reports). Results: After 1 year of BMI reporting, parents of children with overweight were less likely [odds ratio (OR) = 0.7, 95% confidence interval (CI): 0.5-0.9] to recall receiving a BMI report and less likely (OR = 0.2, 95% CI: 0.1-0.3) to accurately recall their child's weight status from the BMI report, compared with parents of children with healthy weight. Differences in accuracy of child weight status recall persisted after 2 years of BMI reporting exposure. Only 22% of parents of children at risk for overweight and with overweight reported being surprised by the results. Conclusions: Parents' recall of receiving a school-based BMI report is low, as is the accuracy of recall of child's overweight status. Additionally, parents' surprise at, and concern for, BMI results is limited. Current BMI reports may be ineffective at reducing pediatric obesity due to their lack of salience and ability to compel meaningful behavior change among parents.

Background

The accuracy of students' heights and weights measured by school staff for body mass index (BMI) screening/reporting has not been established. This study examined school staffs' measurement accuracy, comparing accuracy by staff- and student-level characteristics.

Methods

School staff and researchers measured the height and weight of 1008 4th-8th grade students, within 1 month of each other. Bland-Altman plots, mean differences, and intraclass correlation coefficients (ICCs) were calculated to examine measurement accuracy. Linear mixed effects models assessed accuracy by staff- and student-level characteristics.

Results

Bland-Altman plots revealed no appreciable bias in differences between researcher and staff measurements. The mean absolute difference between researcher and school staff measurements were 1.0 ± 1.6 cm (height), 0.7 ± 1.8 kg (weight), and 0.4 ± 0.8 kg/m² (BMI). Inter-rater ICC values were ≥0.97, demonstrating "excellent" reliability. Categorical weight status was correctly classified for 94% of students (kappa 0.90), and for 96% with a BMI ≥95th% (kappa 0.94). Physical education (PE) teachers were slightly less accurate than school nurses in measuring height (0.4 cm less accurate; p = .045) and weight (0.4 kg; p = .015).

Conclusions

School staff conducted height/weight measurements on 4th-8th grade students with high accuracy. Resultant school-based BMI reports using similar protocols should validly reflect weight status for almost all students.