Table 3.
Injection sites
| Variable | History of skin and soft tissue infection | p value | Odds ratio | ||
|---|---|---|---|---|---|
| Yes (n = 18) | No (n = 62) | ||||
| n (%) | n (%) | ||||
| Find vein on first injection attempt | Always | 3 (16.7) | 23 (37.1) | 0.037** | Ref |
| Most of the time | 8 (44.4) | 25 (40.3) | 1.66 each decrease in freq | ||
| Sometimes | 1 (5.6) | 7 (11.3) | |||
| Rarely | 4 (22.2) | 4 (6.5) | |||
| Never | 2 (11.1) | 2 (3.2) | |||
| Anatomical injection location | Cubital fossa | 8 (44.4) | 26 (41.9) | 0.831 (overall) | Ref |
| Forearm | 4 (22.2) | 22 (35.5) | 0.59 | ||
| Hand | 2 (11.1) | 5 (8.1) | 1.3 | ||
| Upper arm | 2 (11.1) | 4 (6.5) | 1.3 | ||
| Other | 2 (11.1) | 5 (8.1) | 1.62 | ||
| Injection type (multiple selection) | Vein | 16 (88.9) | 59 (93.8) | 0.333 | 0.41 |
| Skin | 3 (16.7) | 2 (3.2) | 0.038** | 6 | |
| Muscle | 4 (22.2) | 1 (1.6) | 0.001** | 17.4 | |
| I don’t know | 1 (5.6) | 0 (0.0) | 0.062* | ||
| Prefer not to answer | 0 (0.0) | 1 (1.6) | 0.588 | ||
| Injection frequency | > 3 × daily | 5 (27.8) | 11 (17.7) | 0.892 | |
| 2–3 × daily | 3 (16.7) | 15 (24.2) | |||
| Daily | 1 (5.6) | 8 (12.9) | |||
| > Weekly | 3 (16.7) | 11 (17.7) | |||
| Weekly | 1 (5.6) | 7 (11.3) | |||
| > Once in past 30 days | 2 (11.1) | 5 (8.1) | |||
| Once in past 30 days | 2 (11.1) | 4 (6.5) | |||
*Significant on the 0.10 level
**Significant on the 0.05 level