Table 3.
Category variables | Frequency | Percentage |
---|---|---|
Duration of coffee use in years | ||
<5 years | 236 | 57.0 |
5–10 years | 178 | 43.0 |
A daily cup of coffee use | ||
<1–3 cups | 178 | 42.9 |
3–6 cups | 130 | 31.4 |
6–9 cups | 106 | 25.6 |
Comorbid substance use | ||
Yes | 46 | 11.1 |
No | 368 | 88.9 |
When did you start | ||
Before joining university | 204 | 49.2% |
After joining university | 210 | 51.8% |
Family history | ||
Yes | 400 | 96.6 |
No | 14 | 3.4 |
Comorbid: Additional use of a substance (khat, cigarette, alcohol).