Table 3

Comparison of two prenatal care utilization indices: Percent of singleton live births assigned to each category and percent of preterm, low birth weight, and small-for-gestational age births among live births in each category, Winnipeg, 1991–2000

Index
Categories
Singleton live births
Preterm Births
Small-for-gestational-age (SGA)
Low birth weight (LBW)





No. (%)
No. (%)
No. (%)
No. (%)

APNCU Index






Intensive
25 394 (31.4)
2 725 (10.7)
2 379 (9.4)
1 920 (7.6)

Adequate
31 982 (39.5)
1 130 (3.5)
2 981 (9.3)
1 011 (3.2)

Intermediate
16 937 (20.9)
463 (2.7)
1 717 (10.1)
494 (2.9)

Inadequate
6 383 (7.9)
458 (7.2)
832 (13.0)
389 (6.1)

No prenatal care
293 (0.4)
44 (15.0)
55 (18.8)
44 (15.0)
R-GINDEX






Intensive
10 192 (12.6)
326 (3.2)
929 (9.1)
255 (2.5)

Adequate
33 453 (41.3)
2 951 (8.8)
3 134 (9.4)
2 201 (6.6)

Intermediate
30 139 (37.2)
1 077 (3.6)
2 960 (9.8)
993 (3.3)

Inadequate
6 912 (8.5)
422 (6.1)
886 (12.8)
365 (5.3)

No prenatal care
293 (0.4)
44 (15.0)
55 (18.8)
44 (15.0)

Heaman et al. BMC Pregnancy and Childbirth 2008 8:15   doi:10.1186/1471-2393-8-15