Table IV.
Risk factors for LOS determined by multivariate lineal regression analysis
| Characteristic | Risk ratio | 95% CI | P value |
|---|---|---|---|
| Age < 6 mo | 5.26 | 2.95-9.10 | <.01 |
| Malnutrition | 3.98 | 2.84-5.59 | <.01 |
| Apnea | 6.76 | 4.44-10.2 | <.01 |
| RSV | 3.04 | 2.27-4.05 | <.01 |
| Pneumonia/atelectasis | 7.46 | 3.96-10.81 | <.01 |
R2 = 0.28; F statistic (5) = 44.97.
Age, RSV, apnea, malnutrition and pneumonia/atelectasis were analyzed as categoric variables in relation with LOS. Associations of risk factors in lineal regression were displayed as ratios and 95% CIs, which represent the antilog of the regression parameter estimates and confidence limits. Boldface indicates statistical significance.