Sample size | Efficacy (%) | Months of follow up | |||
---|---|---|---|---|---|
1 | 2 | 4 | 6 | ||
2×20 | 70 | 28 | 58 | 65 | 85 |
80 | 43 | 77 | 86 | 97 | |
2×30 | 60 | 36 | 56 | 66 | 83 |
70 | 43 | 75 | 84 | 95 | |
80 | 55 | 91 | 96 | 100 | |
2×40 | 60 | 41 | 68 | 78 | 91 |
70 | 52 | 88 | 94 | 99 | |
80 | 67 | 97 | 99 | 100 | |
2×50 | 60 | 48 | 83 | 85 | 96 |
70 | 65 | 93 | 97 | 100 | |
80 | 76 | 98 | 100 | 100 | |
2×75 | 60 | 69 | 94 | 96 | 99 |
70 | 80 | 99 | 100 | 100 | |
80 | 91 | 100 | 100 | 100 | |
2×100 | 60 | 78 | 98 | 99 | 100 |
70 | 91 | 100 | 100 | 100 | |
80 | 97 | 100 | 100 | 100 |