Table 4. Outcome parameters for patients (n = 167) treated with AS and Q, stratified by African versus non-African ethnicity.
| African ethnicity (n = 91) | Non-African ethnicity (n = 76) | |||||
| AS n = 18 | Q n = 73 | AS n = 6 | Q n = 70 | P mhor (95% CI) | P Crude OR (95% CI) | |
| Median length of stay, days (mean±SD) | 3 (3.8±2.1) | 4 (4.7±2.7) | 4.5 (6.2±4.7) | 6 (8.1±12.7) | ||
| Length of stay ⩾3 days (%) | 13 (72%) | 63 (86%) | 4 (67%) | 65 (93%) | P = 0.027a mhor = 0.33 (0.1, 0.9) | P = 0.013 OR = 0.29 (0.10, 0.82) |
| Length of stay ⩾5 days (%) | 4 (22%) | 30 (41%) | 3 (50%) | 47 (67%) | P = 0.090b mhor = 0.43 (0.2, 1.2) | P = 0.026 OR = 0.35 (0.14, 0.92) |
| Median length of stay (ICU), day (mean±SD) | 0 (0.4±1.4) | 0 (0.6±1.5) | 0 (1.3±2.2) | 0 (2.6±9.5) | ||
| ICU admission (%) | 1 (6%) | 13 (18%) | 2 (33%) | 29 (41%) | P = 0.219c mhor = 0.44 (0.1, 1.7) | P = 0.086 OR = 0.34 (0.10, 1.23) |
| Death during stay (%) | 0 (0%) | 0 (0%) | 0 (0%) | 5 (7%) | P>0.05d | |
Note: Numeric outcome measures; categorical measures examined for confounding effect by ethnicity via Mantel–Haenszel odds ratio (mhor), compared to crude (unstratified) odds ratio (OR).
aPhomogeneity of ORs = 0.401.
bPhomogeneity of ORs = 0.867.
cPhomogeneity of ORs = 0.489.
dPhomogeneity of ORs = not avalable for this calculation.