Table 1

Component	Est. Probability of Prematurity (per 1,000 births)	95% Confidence Interval
Component	Est. Probability of Prematurity (per 1,000 births)	Lower	Upper
1	1000.0	1000.0	1000.0
2	636.7	325.0	864.5
3	15.7	2.9	79.3
4	0.1	0.0	1.5
Component	Est. Probability of Maternal Diabetes (per 1,000 births)	95% Confidence Interval
Component	Est. Probability of Maternal Diabetes (per 1,000 births)	Lower	Upper
1	14.8	0.4	354.0
2	34.2	20.0	57.8
3	29.5	25.8	33.7
4	42.3	16.0	106.9
Component	Est. Probability of Maternal Chronic HBP (per 1,000 births)	95% Confidence Interval
Component	Est. Probability of Maternal Chronic HBP (per 1,000 births)	Lower	Upper
1	16.4	0.1	777.7
2	15.6	8.4	29.0
3	7.1	5.4	9.4
4	6.5	1.1	37.6
Component	Est. Probability of Previous Preterm Birth (per 1,000 births)	95% Confidence Interval
Component		Lower	Upper
1	46.9	5.2	315.1
2	38.3	23.0	63.0
3	8.5	5.1	14.0
4	5.5	1.8	16.7

Table 1: Estimated probabilities of risk factors within each component.
Displayed are estimated probabilities of severe prematurity (< 29 weeks), maternal diabetes, maternal chronic HBP, and a previous preterm birth within each component, along with 95% confidence intervals.