Table 1

Cochrane-Orcutt log-linear regression analysis results for predictors of total inward leakage (TIL)

VariableCoefficient for TIL increase95% CIP values
Mask
 3M9322reference
 3M95022.01.2 to 3.30.007
 Yimeijian13.98.5 to 22.7<0.001
 Yi Jie PM2.526.716.4 to 43.5<0.001
Activity
 Talkingreference
 Breathing deeply1.00.9 to 1.20.812
 Stationary1.10.9 to 1.20.329
 Bending1.11.0 to 1.30.014
 Head moving1.21.1 to 1.30.001
 Constant
 n = 2084, R2= 0.11
2.31.6 to 3.3<0.001
  • The coefficients represent the factor by which TIL is increased compared with the reference category.