Table 1.
Descriptive information by UKB participants’ answers to the question: Would you describe yourself as someone who takes risks?
| Yes (n = 113,882) | No (n = 322,354) | P value | |
|---|---|---|---|
| Female | 39.5% | 59.2% | <1 × 10−200 |
| Age | 55.8 (8.2) | 57.1 (7.9) | <1 × 10−200 |
| BMI (kg/m2)a | 27.7 (4.7) | 27.3 (4.8) | 3.1 × 10−81 |
| Age at first birthb | 25.2 (4.9) | 25.4 (4.5) | 1.1 × 10−20 |
| Ever smokeda | 53.3% | 43.3% | <1 × 10−200 |
| Alcohol frequency (self-report)a | Median—‘three or four times a week’ | Median—‘once or twice a week’ | <1 × 10−200 |
| Drug addiction (self-report)a | 0.33% | 0.11% | 4.4 × 10−32 |
| Any eating disorder (self-report)a | 0.08% | 0.07% | 0.22 |
| Schizophrenia (self-report)a | 0.12% | 0.11% | 0.17 |
| Depression (self-report)a | 6.18% | 5.96% | 2.3 × 10−14 |
| Age completed educationa | 16.7 (2.4) | 16.6 (2.1) | 6.5 × 10−6 |
BMI body mass index
Values are mean (SD) or %, except for alcohol frequency where the responses were on a six point scale ranging from ‘Never’ to ‘Daily or almost daily’
a Age- and sex-adjusted models used to calculate the P value in a regression model—linear for continuous phenotypes, logistic for binary phenotypes and ordered categorical for alcohol frequency
b Data for women only, the P value is from a model with only age adjustm`ent