Table 2.
Family history between those with and without a history of premature hair graying
| Participant characteristics | History of PHG, n (%) | No history of PHG, n (%) | OR (95% CI) | P |
|---|---|---|---|---|
| Number of subjects | 216 | 251 | ||
| Family history of PHG | ||||
| Mother | 81 (37.5) | 40 (15.9) | 3.165 (2.046-4.895) | <0.001 |
| Father | 74 (34.3) | 23 (9.2) | 5.166 (3.094-8.626) | <0.001 |
| Maternal grandparent | 36 (16.7) | 19 (7.6) | 2.442 (1.355-4.401) | 0.002 |
| Paternal grandparent | 30 (13.9) | 16 (6.4) | 2.369 (1.254-4.477) | 0.007 |
| Sibling | 42 (19.4) | 18 (7.2) | 3.125 (1.739-5.614) | <0.001 |
| Family medical history | ||||
| Anxiety | 82 (38.0) | 84 (33.5) | 1.217 (0.832-1.779) | 0.311 |
| Depression | 113 (52.3) | 102 (40.6) | 1.603 (1.110-2.313) | 0.012 |
| Bipolar disorder | 27 (12.5) | 35 (13.9) | 0.882 (0.514-1.511) | 0.647 |
| Schizophrenia | 3 (1.4) | 3 (1.2) | 1.164 (0.233-5.829) | 1.000 |
PHG – Premature hair graying; CI – Confidence interval; OR – Odds ratio