Table 5.
Univariate and multi-variate models assessing HIV testing rates among people recruited as part of the Needle Exchange Surveillance Initiative in all of Glasgow, 2010–2019
| Co-variates | Na | HIV test in the last year (% of N) | Univariateb | Multi-variateb | ||
|---|---|---|---|---|---|---|
| OR (95% CI) | P value | aOR (95% CI) | P value | |||
| Time period | ||||||
| Pre-outbreak (2010–2014) | 3,139 | 889 (28%) | 0.32 (0.28–0.36) | < 0.001 | 0.28 (0.25–0.32) | < 0.001 |
| Early outbreak (2015–2016) | 886 | 341 (38%) | 0.49 (0.42–0.59) | < 0.001 | 0.47 (0.40–0.55) | < 0.001 |
| Ongoing outbreak (2017–2019) | 1,802 | 1,002 (56%) | 1 | 1 | ||
| Local authority area | ||||||
| Rest of Glasgow | 1,438 | 514 (36%) | 1 | 1 | ||
| Glasgow city | 4,389 | 1,718 (39%) | 1.16 (1.02–1.31) | 0.024 | 1.17 (1.02–1.34) | 0.029 |
| Gender | ||||||
| Male | 4,246 | 1,608 (38%) | 1 | 1 | ||
| Female | 1,556 | 613 (39%) | 1.07 (0.94–1.21) | 0.308 | 1.03 (0.91–1.18) | 0.609 |
| Age group | ||||||
| < 35 | 1,856 | 687 (37%) | 1 | 1 | ||
| 35–45 | 2,972 | 1,115 (37%) | 1.02 (0.90–1.15) | 0.731 | 0.74 (0.65–0.85) | < 0.001 |
| 46 + | 993 | 428 (43%) | 1.29 (1.09–1.51) | 0.002 | 0.72 (0.59–0.85) | < 0.001 |
| Methadone prescribing | ||||||
| Not prescribed | 419 | 108 (25%) | 1 | 1 | ||
| In the last 6 months | 4,803 | 1,894 (39%) | 1.87 (1.49–2.35) | < 0.001 | 2.34 (1.86–2.95) | < 0.001 |
| In the past but not the last 6 months | 578 | 221 (38%) | 1.78 (1.35–2.34) | < 0.001 | 2.25 (1.70–2.98) | < 0.001 |
OR odds ratio, aOR adjusted odds ratio
aMissing data has been excluded
bMulti-level framework to adjust for across survey duplicates