Table 3. Features of sulfadoxine consumption associated with presence of antibodies.
| Characteristics | Patients tested | Positive (%) | OR | 95% CI | p-value |
|---|---|---|---|---|---|
| History of drug reaction | 52.757 | 28.730, 96.879 | < 0.001 | ||
| Yes | 118 | 89 (75.4) | |||
| No | 382 | 21 (5.5) | |||
| Brand of sulphonamide | < 0.001 | ||||
| Fansidar | 250 | 59 (23.6) | |||
| Maloxine | 106 | 38 (35.8) | |||
| Metakefin | 87 | 5 (5.7) | |||
| Septrin | 57 | 8 (14.0) | |||
| Duration of last sulphonamide usage, months | < 0.001 | ||||
| 1 | 172 | 49 (28.5) | |||
| 2 | 179 | 48 (26.8) | |||
| 3 | 103 | 11 (10.7) | |||
| ≥ 4 | 46 | 2 (4.3) | |||
OR: odd ratio; CI: confidence interval.