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. 2011 Jun 30;11:522. doi: 10.1186/1471-2458-11-522

Table 2.

Sensitivity of continuous weekend-extension strategies to compliance levels

Effectiveness R0 = 1.4 R0 = 2.0

Compliance Overall attack rates % (95% CIa) Relative effectivenessb Overall attack rates % (95% CI) Relative effectiveness
Baseline 18.61 (18.54, 18.71) 0.00 26.43 (26.36, 26.53) 0.00

Mon 100% 16.14 (16.03, 16.26) 0.13 25.52 (25.43, 25.62) 0.03
90% 16.41 (16.28, 16.54) 0.12 25.58 (25.49, 25.67) 0.03
75% 16.83 (16.74, 16.96) 0.10 25.74 (25.67, 25.82) 0.03
50% 17.53 (17.39, 17.65) 0.06 26.01 (25.95, 26.09) 0.02

Mon+Tue 100% 11.82 (11.58, 12.11) 0.36 23.84 (23.73, 23.94) 0.10
90% 12.98 (12.80, 13.17) 0.30 24.10 (24.00, 24.22) 0.10
75% 14.23 (13.93, 14.46) 0.23 24.55 (24.41, 24.96) 0.07
50% 15.99 (15.81, 16.22) 0.14 25.28 (25.16, 25.36) 0.04

Mon+Tue 100% 3.26 (1.47, 4.79) 0.82 20.30 (20.16, 20.42) 0.23
+Wed 90% 7.24 (4.87, 8.21) 0.61 21.15 (21.01, 21.34) 0.20
75% 10.92 (10.27, 11.37) 0.41 22.31 (22.17, 22.43) 0.16
50% 14.45 (14.13, 14.80) 0.22 24.00 (23.81, 24.15) 0.10

a95%CI stands for the 95% confidence intervals from 50 model realizations.

bRelative effectiveness = (Baseline attack rate -Strategy-specific attack rate)/Baseline attack rate.

Table 2 compares the overall attack rates and relative effectiveness resulted from three continuous weekend-extension strategies (Mon, Mon+Tue, and Mon+Tue+Wed). Sensitivity analysis was conducted on each strategy under five compliance levels of 0%, 50%, 75%, 90%, and 100%.