|  |  | True time point for change in transmission | ||||||
---|---|---|---|---|---|---|---|---|---|
3 yearsb | 5 yearsb | 10 yearsb | |||||||
SCR beforea | SCR aftera | Sample size | SCR before | SCR after | SCR before | SCR after | SCR before | SCR after | |
0.0969 | 0.0324 | 250 | 368.2 | â11.4 | 549 | â23.2 | 1835.9 | â7.1 | |
 |  | 500 | 34.2 | â22.1 | 47.4 | â21.9 | 998.1 | â2.4 | |
 |  | 1000 | 11.2 | â8.2 | 9.1 | â10.7 | 143.1 | â2.4 | |
 |  | 2500 | 2.5 | â5.1 | 4.4 | â3.0 | 8.4 | â1.6 | |
0.0969 | 0.0108 | 250 | 215.5 | â9.3 | 113.8 | â17.6 | 671.3 | â10.0 | |
 |  | 500 | 18.0 | â8.2 | 23.8 | â17.0 | 96.6 | â4.1 | |
 |  | 1000 | 5.9 | 1.3 | 5.2 | â3.4 | 27.3 | â2.0 | |
 |  | 2500 | 2.0 | 4.7 | 2.1 | â2.6 | 3.2 | â1.4 | |
0.0324 | 0.0108 | 250 | 325.3 | â14.0 | 191.9 | â26.7 | 5384.0 | â11.2 | |
 |  | 500 | 66.0 | â21.5 | 25.4 | â32.8 | 1227.1 | â7.8 | |
 |  | 1000 | 13.2 | â24.6 | 13.2 | â25.2 | 126.7 | â5.0 | |
 |  | 2500 | 5.2 | â16.6 | 6.4 | â9.5 | 12.9 | â2.8 | |
0.0324 | 0.0108 | 250 | 534.7 | 20.9 | 105.9 | â29.9 | 2254.6 | â10.2 | |
 |  | 500 | 59.8 | 0.6 | 31.0 | â25.2 | 237.8 | â9.4 | |
 |  | 1000 | 12.6 | â8.2 | 10.6 | â11.3 | 20.8 | â7.4 | |
 |  | 2500 | 4.7 | â0.4 | 4.5 | â2.4 | 4.7 | â3.2 |