Table 1.
Participant characteristics and covariate information
| Covariate | S*=2 (1,545) | S=3 (1,752) | S=4 (3,375) | S=5 (4,964) | S=6 (16,402) | Non-cancer (27,966) | Cancer (72) | All (28,038) |
|---|---|---|---|---|---|---|---|---|
| Age at baseline (years) | ||||||||
| Mean | 63.40 | 63.27 | 64.15 | 63.45 | 61.44 | 62.34 | 63.74 | 62.35 |
| SD+ | 5.48 | 5.34 | 5.02 | 5.16 | 5.24 | 5.33 | 5.63 | 5.33 |
| Family history | ||||||||
| Yes (%) | 65 (4.21) | 65 (3.71) | 119 (3.53) | 192 (3.87) | 655 (3.99) | 1090 (3.90) | 6 (8.33) | 1096 (3.91) |
| No (%) | 1,480 (95.79) | 1,687 (96.29) | 3,256 (96.47) | 4,772 (96.13) | 15,747 (96.01) | 26,876 (96.10) | 66 (91.67) | 26,942 (96.09) |
| Time interval between baseline and second to last test (months) | ||||||||
| Mean | 7.28 | 19.84 | 29.34 | 40.97 | 49.40 | 41.38 | 21.83 | 41.33 |
| SD | 12.51 | 11.51 | 8.06 | 5.41 | 1.78 | 13.37 | 15.90 | 13.41 |
| CA-125 value at the second to last test | ||||||||
| Mean | 13.10 | 12.77 | 12.77 | 12.33 | 11.96 | 12.23 | 17.14 | 12.24 |
| SD | 15.34 | 8.36 | 11.74 | 9.39 | 11.06 | 10.99 | 15.61 | 11.01 |
| Time interval between last two tests (months) | ||||||||
| Mean | 15.12 | 14.97 | 14.43 | 18.45 | 11.84 | 13.70 | 12.31 | 13.70 |
| SD | 10.73 | 8.54 | 6.61 | 6.55 | 2.12 | 5.72 | 3.59 | 5.72 |
| Velocity (U/ml per month) | ||||||||
| Mean | 0.50 | 0.33 | 0.19 | 0.03 | 0.02 | 0.04 | 19.75 | 0.09 |
| SD | 10.78 | 4.52 | 7.23 | 0.90 | 0.90 | 1.27 | 68.76 | 3.82 |
*
S denotes the number of screening tests a woman took.
+
SD denotes the standard deviation.