Table 2.
Adjusted Odds Ratios of Predictors of Death of Neonatal Patients in the 2006 Kids' Inpatient Database Estimated by Weighted Multivariable Logistic Regression Analysis
| Variable | Model 1 Adjusted Odds Ratio | Model 1 Adjusted 95% Confidence Interval | Model 2 Adjusted Odds Ratio | Model 2 Adjusted 95% Confidence Interval |
|---|---|---|---|---|
| Preterm, low birth weight, or intrauterine growth restriction | 13.67 | 12.91, 14.47 | 13.19 | 12.46, 13.97 |
| Intraventricular hemorrhage | 6.04 | 5.58, 6.54 | 6.27 | 5.76, 6.84 |
| Hypoxia | 5.97 | 5.40, 6.60 | 6.10 | 5.50, 6.76 |
| Necrotizing enterocolitis | 3.38 | 3.03, 3.77 | 3.44 | 3.07, 3.86 |
| Congenital malformation | 3.08 | 2.93, 3.22 | n.a. | n.a. |
| Life-threatening congenital malformations* | n.a. | n.a. | 8.84 | 8.32, 9.39 |
| Uninsured | 2.58 | 2.41, 2.77 | 2.66 | 2.49, 2.85 |
| Sepsis | 1.61 | 1.52, 1.70 | 1.63 | 1.53, 1.73 |
| Maternal, placental, umbilical cord, or delivery complication | 1.59 | 1.49, 1.69 | 1.66 | 1.56, 1.77 |
| Respiratory distress syndrome | 1.43 | 1.36, 1.51 | 1.72 | 1.63, 1.82 |
| Multiple birth cohort | 1.10 | 1.09, 1.17 | 1.20 | 1.13, 1.27 |
| Male | 1.07 | 1.03, 1.11 | 1.09 | 1.04, 1.13 |
| Location of patient's county of residence | ||||
| Central counties of metro areas ≥1 million population | Ref | Ref | ||
| Fringe counties of metro areas ≥1 million population | 1.00 | 0.95, 1.05 | 0.99 | 0.934, 1.04 |
| Counties in metro areas of 250,000–999,999 population | 1.13 | 1.06, 1.19 | 1.10 | 1.04, 1.17 |
| Counties in metro areas of 50,000–249,999 population | 1.22 | 1.13, 1.32 | 1.19 | 1.10, 1.29 |
| Micropolitan counties† | 1.29 | 1.18, 1.41 | 1.23 | 1.13, 1.35 |
| Non-core counties‡ | 1.17 | 1.06, 1.30 | 1.11 | 0.99, 1.23 |
| Hospital | 1.00 | 1.00, 1.00 | 1.00 | 1.00, 1.00 |
| Hospital bed size | ||||
| Large | Ref | Ref | ||
| Medium | 0.79 | 0.75, 0.83 | 0.79 | 0.75, 0.83 |
| Small | 0.83 | 0.77, 0.89 | 0.82 | 0.76, 0.88 |
| Location/teaching status of hospital | ||||
| Urban teaching | Ref | Ref | ||
| Urban non-teaching | 0.50 | 0.47, 0.52 | 0.51 | 0.49, 0.54 |
| Rural | 0.42 | 0.37, 0.48 | 0.45 | 0.40, 0.50 |
For Model 1 the c statistic is 0.85; concordance is 82.1% and discordance is 11.9%. Goodness of fit is indicated by <0.78% differences between weighted observed percentages and weighted means of predicted probabilities for each predictor variable. Sum of model weights used is 4,245,279.
For Model 2 the c statistic is 0.86; concordance is 83.1% and discordance is 10.4%. Goodness of fit is indicated by <0.78% differences between weighted observed percentages and weighted means of predicted probabilities for each predictor variable. Sum of model weights used is 4,245,279.
As defined in Table A-3 of Phibbs et al. 2007.
Urban areas around a core city or town with a population of 10,000 to 49,999.
Rural area with no urban cluster of at least 10,000 people.