Positivity criterion (risk factor score)
| | | | | |
⩾0 | 884* | 97 | 1.0 (0.96 to 1.0) | 0 (0 to 0) | 0.11 (0.09 to 0.13) | – | 1.0 (1.0 to 1.0) | – |
⩾8 | 777 | 95 | 0.98 (0.93 to 1.0) | 0.13 (0.11 to 0.16) | 0.12 (0.10 to 0.l5) | 0.98 (0.93 to 1.0) | 1.13 (1.13 to 1.13) | 0.15 (0.06 to 0.41) |
⩾12 | 547 | 83 | 0.86 (0.77 to 0.92) | 0.41 (0.38 to 0.45) | 0.15 (0.12 to 0.18) | 0.96 (0.93 to 0.98) | 1.45 (1.44 to 1.47) | 0.35 (0.31 to 0.40) |
⩾16 | 244 | 52 | 0.54 (0.43 to 0.64) | 0.76 (0.72 to 0.79) | 0.21 (0.16 to 0.27) | 0.93 (0.91 to 0.95) | 2.20 (2.15 to 2.26) | 0.61 (0.59 to 0.63) |
⩾20 | 86 | 21 | 0.22 (0.14 to 0.31) | 0.92 (0.90 to 0.94) | 0.24 (0.16 to 0.35) | 0.90 (0.88 to 0.92) | 2.62 (2.45 to 2.89) | 0.85 (0.84 to 0.86) |
⩾24 | 7 | 2 | 0.02 (0 to 0.07) | 0.99 (0.99 to 1.00) | 0.29 (0.04 to 0.71) | 0.89 (0.87 to 0.91) | 3.25 (1.50 to 10.44) | 0.99 (0.98 to 0.99) |
| | | | | | | | |
Positivity criterion (centile)
| | | | | |
⩾0th | 899 | 98 | 1.0 (0.96 to 1.0) | 0 (0.00 to 0.00) | 0.11 (0.09 to 0.13) | – | 1.0 (1.0 to 1.0) | – |
⩾40th | 727 | 97 | 0.99 (0.94 to 1.00) | 0.21 (0.19 to 0.24) | 0.13 (0.11 to 0.16) | 0.99(0.97 to 1.0) | 1.26 (1.26 to 1.26) | 0.05 (0.01 to 0.34) |
⩾75th | 329 | 87 | 0.89 (0.81 to 0.94) | 0.70 (0.66 to 0.73) | 0.26 (0.22 to 0.32) | 0.98 (0.97 to 0.99) | 2.94 (2.92 to 2.97) | 0.16 (0.14 to 0.19) |
⩾95th | 56 | 30 | 0.31 (0.22 to 0.41) | 0.97 (0.95 to 0.98) | 0.54 (0.40 to 0.67) | 0.92 (0.90 to 0.94) | 9.43 (9.27 to 10.34) | 0.72 (0.71 to 0.73) |