| Yi | Han | Other | |||
---|---|---|---|---|---|---|
 | Number of clients | Proportion (%) | Number of clients | Proportion (%) | Number of clients | Proportion (%) |
Route of drug use | χ 2 = 258.61, P < 0.0001 | |||||
 Smoking or sniffing | 3456 | 63.0 | 618 | 53.7 | 31 | 58.5 |
 Pure injection | 775 | 14.1 | 383 | 33.3 | 12 | 22.6 |
 Injection mixed with other | 1256 | 22.9 | 149 | 13.0 | 10 | 18.9 |
Sharing syringes | χ 2 = 84.56, P < 0.0001 | |||||
 Yes | 939 | 17.1 | 317 | 27.6 | 22 | 41.5 |
 No | 4548 | 82.9 | 833 | 72.4 | 31 | 58.5 |