Table 3. Univariate and multivariate logistic regression analyses for anemia.
| Variables | Univariate | Multivariate | ||
|---|---|---|---|---|
| OR (95% CI) | P value | OR (95% CI) | P value | |
| Age, < 24 mon | 4.18 (1.70–10.20) | 0.002 | 3.76 (1.20–11.80) | 0.023 |
| Female sex | 0.68 (0.39–1.16) | 0.157 | 0.64 (0.33–1.27) | 0.205 |
| Hydronephrosis | 1.84 (1.07–3.15) | 0.027 | 1.27 (0.66–2.44) | 0.476 |
| APN | 2.67 (1.54–4.62) | < 0.001 | 1.02 (0.40–2.57) | 0.972 |
| VUR | 1.93 (1.00–3.72) | 0.050 | 1.87 (0.83–4.21) | 0.128 |
| White blood cell, /μL | 1.00 (1.00–1.00) | 0.706 | - | - |
| NGAL, > 211 ng/mL | 3.98 (2.12–7.48) | < 0.001 | 2.37 (1.07–5.27) | 0.035 |
| CRP, > 3.7 mg/dL | 2.88 (1.66–5.01) | < 0.001 | 1.53 (0.65–3.58) | 0.329 |
Variables with a P value of ≤ 0.20 in the univariable analyses were included in a multivariable logistic regression analysis, and the enter method was used to determine baseline risk factors.
APN = acute pyelonephritis, VUR = vesicoureteral reflux, NGAL = neutrophil gelatinase-associated lipocalin, CRP = C-reactive protein, OR = odds ratio, CI = confidence interval.