Table 4 Sample characteristics of heroin-induced positive responses on first use
From: PCA-based bootstrap confidence interval tests for gene-disease association involving multiple SNPs
| Â | Cases (N= 91) | Controls (N= 245) | P-value |
|---|---|---|---|
Age (yrs) | 30.42 ± 7.65 | 30.93 ± 8.18 | 0.6057 |
Women (%) | 26.4 | 29.8 | 0.5384 |
Age at onset (yrs) | 26.29 ± 7.41 | 26.97 ± 7.89 | 0.4760 |
Reason for first use of heroin | Â | Â | 0.7173 |
Curiousness | 79.1 | 75.1 | Â |
Peer pressure | 6.6 | 4.9 | Â |
Physical disease | 7.7 | 10.2 | Â |
Trouble | 5.5 | 6.1 | Â |
Other reasons | 1.1 | 3.8 | Â |