| Study | Reason for exclusion |
|---|---|
| Edwards 2006 | Study intervention is health education promotion of face washing |
| Khandekar 2006 | Unable to separate the effect of face washing from environmental sanitation interventions as both were indirectly examined as “one intervention” |
| King 2011 | Study aim was to develop standardized definition for a clean face in trachoma prevention |
| Rubinstein 2006 | Study intervention is health education promotion of face washing |
| Sutter 1983 | Not a randomized controlled trial |
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