Table 3.

Predictive characteristics of interstitial pneumonia patterns on day 7 chest radiographs and other associated factors for BPD or death before 36 weeks postmenstrual age

	Cut-off valuea	Sensitivity	Specificity	PPV	NPV
Birth weight	1000 g	66%	84%	74%	75%
Gestational age	28 weeks	80%	72%	66%	84%
Invasive ventilation on day 7 of life	-	60%	91%	82%	77%
Interstitial pneumonia patterns on day 7 chest radiographs	-	25%	98%	89%	66%

PPV positive predictive value, NPV negative predictive value

^a Derived from receiver operating characteristic curve