TABLE 3.
Characteristics | OR | 95% CI | P |
---|---|---|---|
Age, corrected for gestational age <37 wk | |||
<2.0 wk | 9.67 | 4.11–22.75 | <.001 |
2.0–7.9 wk | 4.72 | 2.30–9.68 | <.001 |
2.0–5.9 mo | 1.47 | 0.68–3.19 | .33 |
≥6.0 mo | 1.00 | Reference | |
Gender | |||
Male | 1.00 | Reference | |
Female | 1.12 | 0.78–1.61 | .53 |
Race | |||
White | 1.00 | Reference | |
Nonwhite or missing | 1.28 | 0.70–2.36 | .42 |
Birth wt | |||
<2.3 kg (5 lb) | 2.15 | 1.18–3.92 | .01 |
2.3–3.1 kg (5–6.9 lb) | 1.54 | 0.94–2.53 | .09 |
≥3.2 kg (7 lb) | 1.00 | Reference | |
Reported apnea | 3.63 | 2.55–5.16 | <.001 |
Respiratory rate at preadmission visit | |||
<30 | 4.05 | 2.00–8.20 | <.001 |
30–39 | 2.35 | 1.52–3.64 | <.001 |
40–49 | 1.00 | Reference | |
50–59 | 1.29 | 0.66–2.51 | .46 |
60–69 | 1.06 | 0.62–1.81 | .84 |
≥70 | 2.26 | 1.03–4.95 | .04 |
Lowest documented oxygen saturation over entire preadmission visit <90% | 1.60 | 1.03–2.46 | .04 |