Table 2 Risk of bias items for each included non-randomized control trial study
From: A systematic review of the effect of sleep interventions on presenteeism
Bias due to confounding | Bias in the selection of participants for the study | Bias in classification of interventions | Bias due to deviations from intended intervention | Bias due to missing data | Bias in measurement of outcomes | Bias in the selection of the reported results | Overall | |
|---|---|---|---|---|---|---|---|---|
Espie et al. [11] | Serious | Low | Low | Serious | Critical | Critical | Serious | Critical |
Burton et al. [17] | Serious | Low | Low | Serious | Critical | Critical | Serious | Critical |
Mills et al. [32] | Serious | Low | Low | Serious | Moderate | Moderate | Serious | Serious |