Gestational age data completeness, quality and validity in population-based surveys: EN-INDEPTH study

Table 5A Agreement for gestational age category between ultrasound, HDSS and survey (Matlab only, n = 481)

	Extreme/very preterm^a	Moderate preterm^b	Term^c	Post-term^d	n	Kappa [confidence interval]
Panel A: % of maturity group in HDSS matched with that of ultrasound (group-to-group match: 87.3%)
HDSS	Ultrasound					0.54 [0.49, 0.54]
Extreme/very preterm	7	1	2	0
Moderate preterm	2	34	13	0
Term	0	22	378	3
Post-term	0	1	17	1
n	9	58	410	4	481
Panel B: % of maturity-group in survey matched with that of ultrasound (group-to-group match: 71.5%)
Survey	Ultrasound					0.25 [0.22, 0.30]
Extreme/very preterm	7	4	7	0
Moderate preterm	2	27	56	1
Term	0	27	309	2
Post-term	0	0	38	1
n	9	58	410	4	481

ISSN: 1478-7954