Skip to main content
. 2021 Oct 29;16(10):e0258164. doi: 10.1371/journal.pone.0258164

Table 3. Testing for intervention effects.

The null hypothesis (Ho) is no intervention effect.

Date Intervention Type Time (days) Coeff. Estimates (95% Confidence Interval) Multiplicative effect (rate of infection) Comment (Below 1 = decrease; Above 1 = increase)
March 12–16 Intervention Period 1 5<intervention< = 10 0.223 Exp (0.223) = 1.250 25% increase in the rate of infection. However, there is no significant impact
[-0.676; 1.130]
March 17–22 Intervention Period 2 10<intervention< = 18 -0.066 Exp (-0.066) = 0.936 6% decrease in the rate of infection. No significant impact
[-0.829; 0.683]
March 23–30 Intervention Period 3 18<intervention< = 38 0.445 Exp (0.445) = 1.560 56% increase in the rate of infection. However, this is not statistically significant.
[-0.083; 1.035]
March 31 –April 20 Intervention Period 4 38<intervention< = 44 -0.382*** Exp (-0.382) = 0.682 Statistically significant 32% decline in rate of infection.
[-1.003; -0.145]
April 21–26 Intervention Period 5 44<intervention< = 79 0.129 Exp (0.129) = 1.138 14% increase in rate of infection. However, this not statistically significant impact
[-0.325; 0.716]
>27 April Intervention Period 6 Intervention>79 0.043 Exp (0.043) = 1.044 4% increase in rate of infection. However, this not statistically significant impact
[-0.163; 0.283]

Source: Authors’ estimates | *** highly significant (<0.001)