Table 1 Participant Characteristics.
From: Predicting hair cortisol levels with hair pigmentation genes: a possible hair pigmentation bias
Characteristic | Multi-ancestry | Northwestern European ancestry | |||
|---|---|---|---|---|---|
Training Sample | Cortisol Sample | Cortisone Sample | Cortisol Sample | Cortisone Sample | |
n | 1565 | 1674 | 1656 | 867 | 862 |
Cortisol/Cortisone quantiles (in pg/mg) | |||||
25% | — | 0.91 | 5.31 | 0.69 | 4.80 |
50% | — | 1.65 | 7.78 | 1.28 | 6.61 |
75% | — | 3.26 | 12.49 | 2.71 | 11.85 |
Hair Color (in %) | |||||
Sandy red | 1 | 2 | 2 | 3 | 3 |
Red or Chestnut | 1 | 1 | 1 | 2 | 2 |
Blond | 30 | 26 | 26 | 47 | 46 |
Dark Blond | 33 | 26 | 27 | 38 | 39 |
Brown | 13 | 19 | 18 | 9 | 9 |
Dark Brown | 10 | 15 | 15 | 1 | 1 |
Brownish black/Black | 13 | 11 | 10 | 0 | 0 |
National origin (in %) | |||||
Dutch | 65 | 58 | 59 | 90 | 90 |
Turkish | 6 | 9 | 9 | 0 | 0 |
Surinamese | 6 | 7 | 7 | 0 | 0 |
Other European | 8 | 7 | 7 | 6 | 6 |
Moroccan | 3 | 7 | 7 | 0 | 0 |
Cape Verde | 2 | 3 | 3 | 0 | 0 |
Netherlands Antilles | 2 | 2 | 2 | 0 | 0 |
African | 2 | 2 | 2 | 1 | 1 |
American, Non-Western | 2 | 2 | 2 | 1 | 1 |
Asian, Non-Western | 3 | 2 | 2 | 0 | 0 |
Indonesian | 0 | 1 | 1 | 0 | 0 |
Girls (in %) | 49 | 51 | 52 | 48 | 49 |
Age (mean in years) | 6.15 | 6.19 | 6.19 | 6.04 | 6.04 |
Corticosteroid use (in %) | — | 8 | 8 | 9 | 9 |
