PMC:4137988 / 8410-9288 JSONTXT

{"project":"2_test","denotations":[{"id":"25143747-7786990-55576476","span":{"begin":777,"end":779},"obj":"7786990"}],"text":"Statistical analysis\nWe performed a meta-analysis to evaluate the association of dietary patterns with asthma prevalence in adults. Studies reported dietary pattern scores either as continuous variables or categorized them into tertiles or quintiles. Linear mixed models were used to derive the pooled effect sizes and 95% confidence intervals (CIs) for healthy, unhealthy, and neutral dietary patterns and to assess heterogeneity between studies.17 In addition, heterogeneity and publication bias were visually evaluated using Begg’s funnel plots, which displayed the scatter patterns of effect estimates against standard errors from the included studies, with a vertical line indicating the pooled estimate and diagonal lines showing the expected 95% CIs around the estimate.18 All statistical analyses were conducted using SAS version 9.2 (SAS Institute Inc., Cary, NC, USA)."}