Table 3 Univariate and Multiple Logistic Regression Risk Analyses of the Presence of Multiple Beta-lactam Non-Susceptible Isolates* by Explanatory Variables
Variables | Multiple beta-lactam non-susceptible isolates (n = 40) | Other pneumococcal isolates (n = 234) | Subtotal | Odds ratio (95% CI) (univariate) | P | Odds ratio (95% CI) (multiple) | P |
|---|---|---|---|---|---|---|---|
Gender | |||||||
 Male | 22 (14.2%) | 133 (85.8%) | 155 (100%) | Reference |  |  |  |
 Female | 18 (15.1%) | 101 (84.9%) | 119 (100%) | 1.08 (0.55–2.11) | 0.8285 |  |  |
Age group | |||||||
 6–11 m | 11 (15.3%) | 61 (84.7%) | 72 (100%) | Reference |  |  |  |
 1–2 yr | 26 (15.5%) | 142 (84.5%) | 168 (100%) | 1.02 (0.47–2.18) | 0.9689 |  |  |
  ≥ 3 yr | 3 (8.8%) | 31 (91.2%) | 34 (100%) | 0.54 (0.14–2.07) | 0.3596 |  |  |
Daycare attendance | |||||||
 Yes | 29 (19.2%) | 122 (80.8%) | 151 (100%) | 2.42 (1.15–5.07) | 0.0167 | 2.56 (1.22–5.73) | 0.0123 |
 No | 11 (8.9%) | 112 (91.1%) | 123 (100%) | Reference |  |  |  |
Situation | |||||||
 ARI | 18 (9.9%) | 164 (90.1%) | 182 (100%) | 0.35 (0.18–0.69) | 0.0019 | 0.48 (0.20–1.08) | 0.0764 |
 Healthy children | 22 (23.9%) | 70 (76.1%) | 92 (100%) | Reference |  |  |  |
Living in a large family (≥ 5 persons) | |||||||
 Yes | 26 (17.7%) | 121 (82.3%) | 147 (100%) | 1.73 (0.86–3.49) | 0.1193 | 1.72 (0.84–3.65) | 0.1423 |
 No | 14 (11.0%) | 113 (88.9%) | 127 (100%) | Reference |  |  |  |
Prior antibiotic use | |||||||
 Yes | 8 (8.3%) | 89 (91.8%) | 97 (100%) | 0.41 (0.18–0.92) | 0.0275 | 0.65 (0.23–1.76) | 0.3975 |
 No or unknown | 32 (18.1%) | 145 (81.9%) | 177 (100%) | Reference |  |  |  |