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Flow diagram of included and excluded studies.
Forest plot of general GI concerns with 95% CIs. aOR outside of range.
Forest plot of diarrhea with 95% CIs.
Forest plot of constipation with 95% CIs. aOR outside of range.
Forest plot of abdominal pain with 95% CIs.
ASD and GI Key Words Used in Database Search
PDD-NOS, pervasive developmental disorder not otherwise specified.
Description of Experimental Characteristics and Assessment Methods by Study
X, study characteristic or variable reported in study; —, study characteristic or variable not reported in study.
↵a Subheadings may not add up to 100% because multiple groups were used in a study.
Description of Participants
↵a Longitudinal study.
↵b Reported matched for age.
↵c Reported matched for gender.
ESs, 95% Confidence Limits, and Within-Group Tests for Heterogeneity for Studies Included in the Meta-analysis for GI Symptoms
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