Multivariable cluster-adjusted log-binomial model to calculate RR for study outcomes
| CRI RR (95% CI) | ILI RR (95% CI) | Laboratory-confirmed viruses RR (95% CI) | |
|---|---|---|---|
| Medical masks arm | Ref | Ref | Ref |
| Cloth mask arm | 1.56 (0.97 to 2.48) | 13.00 (1.69 to 100.07) | 1.54 (0.88 to 2.70) |
| Control arm | 1.51 (0.90 to 2.52) | 4.64 (0.47 to 45.97) | 1.09 (0.57 to 2.09) |
| Male | 0.67 (0.41 to 1.12) | 1.03 (0.34 to 3.13) | 0.65 (0.34 to 1.22) |
| Vaccination | 0.83 (0.27 to 2.52) | 1.74 (0.24 to 12.56) | 1.27 (0.41 to 3.92) |
| Hand washing | 0.91 (0.66 to 1.26) | 0.94 (0.40 to 2.20) | 0.66 (0.44 to 0.97) |
| Compliance | 1.14 (0.77 to 1.69) | 1.86 (0.67 to 5.21) | 0.86 (0.53 to 1.40) |
Bold typeface indicates statistically significant. CRI, clinical respiratory illness; ILI, influenza-like illness; RR, relative risk.