From: Sexual practices, sexual behavior and HIV risk profile of key populations in Nigeria
Age of injecting drugs initiationa | ||
 0-9 years | 3 | 2.1 |
 10-19 years | 41 | 29.3 |
 20-29 years | 48 | 34.3 |
 30 and above | 43 | 30.7 |
History of syringe and needle sharing | ||
 Every time | 8 | 5.7 |
 Almost every time | 7 | 5.0 |
 Sometimes | 40 | 28.6 |
 Never | 52 | 37.1 |