Table 3.

Performance of scorecard against four sentinel cluster-level indicators of health vulnerability

	Vulnerability score
	Less vulnerable	Highly vulnerable	Total	%
More than 20% of women in the cluster had less than 3 antenatal care visitsa
No	37	4	41
Yes	2	5	7
Total	39	9	48
Sensitivity				71
Specificity				90
Positive predictive value				56
Negative predictive value				95
More than 10% of women in the cluster had a home deliverya
No	35	1	36
Yes	4	8	12
Total	39	9	48
Sensitivity				67
Specificity				97
Positive predictive value				89
Negative predictive value				90
Neonatal mortality rate for the cluster more than 18 per 1,000 live birthsa
No	30	6	36
Yes	9	3	12
Total	39	9	48
Sensitivity				25
Specificity				83
Positive predictive value				33
Negative predictive value				77
More than 25% of infants in cluster low birth weight (<2,500 g)a
No	23	6	29
Yes	16	3	3
Total	39	9	48
Sensitivity				16
Specificity				79
Positive predictive value				33
Negative predictive value				59

PPV positive predictive value, NPV negative predictive value

^aCut-offs based on 75th centile