Table 2 The condom cumulative use rate
From: Efficacy of a combined contraceptive regimen consisting of condoms and emergency contraception pills
Intervention group | Control group | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | No. Subject at beginning | No. Sub not use condom | Terminate | Cumulative condom use rate | Cumulative terminate rate | SE of Cumulative condom use rate | No. Subject at beginning | No. Sub not use condom | Terminate | Cumulative condom use rate | Cumulative terminate rate | SE of Cumulative condom use rate |
X | Nx | Wx | Tx | P (x+1) | Q(x+1) | Sp(x+1) | Nx | Wx | Tx | P (x+1) | Q(x+1) | Sp(x+1) |
0 | 812 | 0 | 12 | 0.98522 | 0.01478 | 0.004238 | 750 | 0 | 11 | 0.98533 | 0.01467 | 0.004384 |
1 | 800 | 0 | 7 | 0.97660 | 0.02340 | 0.005304 | 739 | 1 | 6 | 0.97733 | 0.02267 | 0.005433 |
2 | 793 | 0 | 14 | 0.95936 | 0.04064 | 0.006931 | 732 | 0 | 5 | 0.97065 | 0.02935 | 0.006162 |
3 | 779 | 0 | 7 | 0.95074 | 0.04926 | 0.007594 | 727 | 0 | 5 | 0.96398 | 0.03602 | 0.006805 |
4 | 772 | 0 | 4 | 0.94582 | 0.05418 | 0.007944 | 722 | 0 | 3 | 0.95997 | 0.04003 | 0.007159 |
5 | 768 | 0 | 5 | 0.93966 | 0.06034 | 0.008356 | 719 | 0 | 4 | 0.95463 | 0.04537 | 0.007601 |
6 | 763 | 0 | 2 | 0.93719 | 0.06281 | 0.008514 | 715 | 0 | 4 | 0.94929 | 0.05071 | 0.008014 |
7 | 761 | 0 | 4 | 0.93226 | 0.06774 | 0.008818 | 711 | 0 | 2 | 0.94662 | 0.05338 | 0.008211 |
8 | 757 | 0 | 3 | 0.92857 | 0.07143 | 0.009037 | 709 | 0 | 4 | 0.94129 | 0.05871 | 0.008587 |
9 | 754 | 0 | 3 | 0.92488 | 0.07512 | 0.009250 | 705 | 0 | 0 | 0.94129 | 0.05871 | 0.008587 |
10 | 751 | 0 | 1 | 0.92365 | 0.07635 | 0.009319 | 705 | 0 | 1 | 0.93995 | 0.06005 | 0.008678 |
11 | 750 | 0 | 0 | 0.92365 | 0.07635 | 0.009319 | 704 | 0 | 2 | 0.93728 | 0.06272 | 0.008857 |
12 | 750 | 0 | 1 | 0.92242 | 0.07758 | 0.009388 | 702 | 0 | 3 | 0.93328 | 0.06672 | 0.009116 |
Total | — | 0 | 63 | — — | — — | — — | — — | 1 | 50 | — — | — — | — — |