Table 4.
Multivariable logistic models for factors associated with HCV infection and syphilis showing Odds Ratios (OR) and 95% Confidence Intervals (CI) – Models include only the factors significantly associated with infection status for patients 15 years of age or older.
| Predictor | Adult patients with Hepatitis C infection: Positive (n=68); Negative (n=1,088)* |
Adult patients with Syphilis infection: Positive (n=33); Negative (n=1,090)** |
|---|---|---|
| OR (95% CI) | OR (95% CI) | |
| Blood Center | ||
| Hemominas BH | Reference | |
| Hemominas JF | 1.6 (0.3–6.3) | |
| Hemominas MO | 2.1 (0.3–10.0) | |
| Hemope | 3.4 (1.3–9.9) | |
| Hemorio | 5.0 (2.1–13.7) | |
| Transfusion history | ||
| 0 | Reference | |
| 1–5 units | 4.1 (0.6–78.7) | |
| 6–10 units | 6.8 (1.1–133.2) | |
| 11–20 units | 17.8 (3.1–338.3) | |
| 21–60 units | 21.5 (4.0–402.8) | |
| 61 or more units | 16.5 (2.7–323.5) | |
| Missing | 11.7 (1.9–228.6) | |
| Marital Status | ||
| Single | Reference | |
| Living together/ not married or married | 1.8 (0.9–3.5) | |
| Separated/ Divorced/ Widower | 6.0 (2.4–15.0) | |
| Illegal drug use (ever) | ||
| No | Reference | |
| Yes | 7.4 (1.4–30.1) | |
| Pain Hospitalizations in previous year | ||
| 0 | Reference | |
| 1–2 | 1.7 (0.8–3.4) | |
| 3 or more | 5.2 (1.9–14.5) | |
| Age Strata | ||
| 18–24 | Reference | Reference |
| 25–34 | 10.9 (2.1–199.8) | 1.4 (0.4–4.2) |
| 35–44 | 32.7 (6.3–603.0) | 4.1 (1.5–13.0) |
| 45–54 | 51.1 (9.3–956.7) | 2.1 (0.5–8.3) |
| 55+ | 112.4 (18.7->999.9) | 5.8 (1.5–22.3) |
| Gender | ||
| Male | Reference | |
| Female | 2.3 (1.0–5.5) | |
| Ever smoked cigarettes in lifetime | ||
| No | Reference | |
| Yes | 2.7 (1.3– 5.8) |
For the HCV multivariable analysis the following variables were considered for inclusion: blood center, age, marital status, transfusion history, illegal drug use (ever), previous surgeries, number of hospital admissions in previous year, vaso-occlusive hospitalizations in previous year, number of vaso-occlusive hospitalizations during the previous year, analgesics and antidepressants use during the last 30 days, current iron overload, avascular necrosis, leg ulcers.
For the syphilis multivariable analysis the following variables were considered for inclusion: gender, age, ever smoking, current smoking, previous surgeries, leg ulcers.