TABLE 2.
Overall intervention effect on prescriptions and subgroup analysis by ethnicity
| Subgroup | Control arm |
Intervention arm |
Univariate/stratified analysis |
Multivariate analysisa |
||||
|---|---|---|---|---|---|---|---|---|
| Total no. of patients | No. of patients (%) receiving antibiotics | Total no. of patients | No. of patients (%) receiving antibiotics | OR (95% CI)b | P value | OR (95% CI)b | P value | |
| All patients | 457 | 81 (17.7) | 457 | 94 (20.6) | 1.20 (0.83–1.73) | 0.322 | ||
| Ethnicity | ||||||||
| Chinese | 310 | 52 (16.8) | 320 | 72 (22.5) | 1.48 (0.96–2.31) | 0.075 | 1.46 (0.91–2.35) | 0.113 |
| Malay | 62 | 11 (17.7) | 54 | 9 (16.7) | 0.78 (0.27–2.23) | 0.652 | 0.56 (0.19–1.69) | 0.307 |
| Indians | 46 | 13 (28.3) | 53 | 6 (11.3) | 0.28 (0.09–0.93) | 0.037 | 0.27 (0.08–0.97) | 0.044 |
| Others | 39 | 5 (12.8) | 30 | 7 (23.3) | 2.25 (0.56–9.07) | 0.251 | 2.07 (0.46–9.31) | 0.339 |
a
Multivariate analysis including all factors from Table 3.
b
With control arm as reference category. OR, odds ratio; CI, confidence interval.