Table 3.
Association of diabetes with severe central scalp hair loss according to age when hair loss was first noticed
| Cases/person-years | HR (95% CI) |
||
|---|---|---|---|
| Age-adjusted | Multivariable⁎ | ||
| Hair loss noticed age < 50 years | |||
| No diabetes | 288/82675 | 1.0 | 1.0 |
| Diabetes | 27/5018 | 2.35 (1.57-3.52) | 1.92 (1.27-2.91) |
| Hair loss noticed age ≥ 50 years | |||
| No diabetes | 426/86122 | 1.0 | 1.0 |
| Diabetes | 102/5630 | 1.78 (1.43-2.23) | 1.66 (1.32-2.08) |
CI, confidence interval; HR, hazard ratio
⁎
Adjusted for age (continuous), body mass index (< 25, 25-29, 30-34, 35-39, ≥ 40, unknown), and years of education (≤ 12, 13-15, 16, ≥ 17)