Table 4.
Country-level linear regression analyses of the associations between injecting and sex risk variables and age and injecting history
|
Percentage of PWID with injecting risk |
Percentage of PWID with sex risk |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Univariable analysis (n=70) |
Multivariable analysis (n=51) |
Univariable analysis (n=59) |
Multivariable analysis (n=NA) |
|||||||
| n | Coefficient (95% CI) | p value | Coefficient (95% CI) | p value | n | Coefficient (95% CI) | p value | Coefficient (95% CI) | p value | |
| Average age | 70 | 0·01 (−0·05 to 0·06) | 0·811 | .. | .. | 58 | −0·00 (−0·07 to 0·06) | 0·919 | .. | .. |
| Duration of injecting | 56 | −0·03 (−0·09 to 0·02) | 0·237 | .. | .. | 48 | −0·04 (−0·13 to 0·05) | 0·410 | .. | .. |
| Average age of onset of injecting | 56 | 0·06 (0·01 to 0·12) | 0·030 | 0·06 (0·01 to 0·12) | 0·030 | 47 | 0·04 (−0·05 to 0·13) | 0·414 | .. | .. |
| Percentage of young PWID | 55 | 0·82 (−1·06 to 2·70) | 0·384 | .. | .. | 46 | 0·76 (−1·62 to 3·14) | 0·523 | .. | .. |
| Urban population growth | 69 | 0·05 (−0·09 to 0·20) | 0·470 | .. | .. | 57 | −0·02 (−0·20 to 0·16) | 0·855 | .. | .. |
| Youth unemployment | 68 | −0·00 (−0·02 to 0·02) | 0·990 | .. | .. | 56 | 0·01 (−0·02 to 0·03) | 0·647 | .. | .. |
| GDP (per US$1000 increase) | 66 | 0·00 (−0·01 to 0·02) | 0·686 | .. | .. | 55 | 0·00 (−0·02 to 0·02) | 0·833 | .. | .. |
| Gini coefficient (per score increase) | 67 | 0·01 (−0·03 to 0·05) | 0·594 | .. | .. | 55 | −0·01 (−0·07 to 0·04) | 0·586 | .. | .. |
| Opioid substitution therapy coverage (per % increase in coverage) | 58 | 0·00 (−0·01 to 0·01) | 0·652 | .. | .. | 47 | −0·00 (−0·01 to 0·01) | 0·691 | .. | .. |
| Percentage of PWID who are women | 68 | −0·01 (−0·03 to 0·01) | 0·341 | .. | .. | 56 | 0·00 (−0·03 to 0·03) | 0·960 | .. | .. |
| Proportion of the general population aged 15–24 years | 70 | 0·00 (−0·07 to 0·06) | 0·886 | .. | .. | 58 | 0·02 (−0·06 to 0·11) | 0·578 | .. | .. |
n refers to number of countries. Injecting risk and sexual risk variables were logit transformed. GDP=gross domestic product. NA=not applicable. PWID=people who inject drugs.