More details about the coloring scheme are provided in eFigure 6 in Supplement 1. τ2 shows variance of random effects (heterogeneity). For remission, iOR > 1.0 denotes beneficial components (increases remission) and iOR < 1.0 harmful components (decreases remission). For dropout, iOR < 1.0 denotes beneficial components (decreases dropout) and iOR > 1.0 harmful components (increases dropouts). For sleep efficiency, iMD > 0 denotes beneficial components (increases efficiency by X%) and iMD < 0 harmful components. For total sleep time, iMD > 0 denotes beneficial components (increases sleep time by X min) and iMD < 0 harmful components. For sleep latency, iMD < 0 denotes beneficial components (decreases latency by X min) and iMD > 0 harmful components. For wake after sleep onset, iMD < 0 denotes beneficial components (decreases wake time by X min) and iMD > 0 harmful components. iMD indicates incremental mean difference; iOR, incremental odds ratio.