Table 2. Relative Risk Estimates for Prostate Cancer According to Natural Hair Pattern.
| All Subjects | Age > 60 at Reference Date | |||||||
|---|---|---|---|---|---|---|---|---|
| Hair Pattern | Cases N (%) | Control N (%) | Age-Adjusted OR (95% CI) | Multivariate* OR (95% CI) | Cases N (%) | Controls N (%) | Age-Adjusted OR (95% CI) | Multivariate* OR (95% CI) |
| Little or no hair loss | 391 (39.1) | 337 (35.8) | 1.00 (referent) | 1.00 (referent) | 196 (34.5) | 148 (28.4) | 1.00 (referent) | 1.00 (referent) |
| Hair loss at age 30 | 198 (19.8) | 237 (25.2) | 0.72 (0.56 – 0.91) | 0.71 (0.56 – 0.91) | 108 (18.5) | 130 (25.0) | 0.61 (0.43 – 0.85) | 0.63 (0.45 – 0.90) |
| Loss at forehead only | 127 (44.7) | 157 (55.3) | 0.69 (0.52 – 0.91) | 0.69 (0.52 – 0.92) | 73 (46.2) | 85 (53.8) | 0.65 (0.44 – 0.95) | 0.68 (0.46 – 1.00) |
| Loss at top of head & forehead | 71 (47.0) | 80 (52.3) | 0.76 (0.53 – 1.09) | 0.75 (0.52 – 1.07) | 32 (41.6) | 45 (58.4) | 0.53 (0.32 – 0.88) | 0.55 (0.33 – 0.93) |
| Hair loss at one year before referent age ˆ | 410 (41.0) | 368 (39.1) | 0.95 (0.77 – 1.16) | 0.90 (0.73 – 1.12) | 267 (47.0) | 243 (46.6) | 0.83 (0.63 – 1.10) | 0.83 (0.62 – 1.10) |
| Loss at forehead only ˆ | 130 (49.3) | 133 (50.6) | 0.83 (0.63 – 1.11) | 0.79 (0.59 – 1.06) | 79 (49.7) | 80 (50.3) | 0.74 (0.51 – 1.08) | 0.73 (0.49 – 1.08) |
| Loss at top & forehead ˆ | 280 (54.4) | 235 (45.6) | 1.01 (0.80 – 1.28) | 0.97 (0.76 – 1.23) | 188 (53.6) | 163 (46.4) | 0.88 (0.65 – 1.08) | 0.88 (0.64 – 1.19 |
*
Adjusted for age at referent date, race, PSA screening history, family history of PCa, BMI and finasteride use
ˆ
No hair loss reported at age 30