Agreement between information recorded during antenatal care and in the MINA-Brazil study

Damasceno, Ana Alice de Araújo; Mosquera, Paola Soledad; Malta, Maíra Barreto; Matijasevich, Alicia; Cardoso, Marly Augusto

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FREE THEMES • Ciênc. saúde coletiva 27 (04) • Apr 2022 • https://doi.org/10.1590/1413-81232022274.04502021 copy

Agreement between information recorded during antenatal care and in the MINA-Brazil study

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

This article aims to examine agreement of pre-pregnancy weight, pregnancy weight, height and systolic (SBP) and diastolic (DBP) blood pressure measurements recorded on antenatal record cards with the same information obtained in the MINA-Brazil longitudinal study. 428 pregnant women who participated in the MINA-Brazil study and had an antenatal card at time of childbirth were selected. Concordance analysis of the data used Lin’s correlation coefficient and Bland-Altman analysis. There was moderate agreement on self-reported pre-pregnancy weight (0.935) and height (0.913) information, and substantial agreement on the pregnant women’s weight in the second (0.993) and third (0.988) trimesters of pregnancy. Little agreement was found on SBP and DBP measured in the second (SBP = 0.447; DBP = 0.409) and third (SBP = 0.436; DBP = 0.332) trimesters of pregnancy. Anthropometric measurements showed strong agreement. There was weak agreement between blood pressure measurements, which may relate both to the variability and the standardisation of these measurements, suggesting the need for continued training of antenatal teams in primary health care.

Key words:
Anthropometry; Antenatal care; Pregnancy; Maternal health

Variables	N	%
Age (complete years)
< 19	84	19.6
19 to < 35	304	71.0
≥ 35	40	9.4
Self-reported skin colour
White	65	15.2
Non-white	363	84.8
Schooling
≤ 9 years	120	28.0
10 to 12 years	246	57.5
> 12 years	62	14.5
Marital status
Not living with partner	90	21.0
Living with partner	338	79.0
Paid occupation
No	275	64.3
Yes	153	35.7
Head of family
No	364	85.1
Yes	64	14.9
Receiving Bolsa Família benefit
No	265	61.9
Yes	163	38.1
First pregnancy
No	239	55.8
Yes	189	44.2

Variables compared	N	MINA-Brasil study	Antenatal record card		Bland-Altman
Variables compared	N	Mean (95%CI)	Mean (95%CI)	CCC^a	Difference in means	Limits of Agreement
Pre-pregnancy weight (kg)	363	57,9 (56,8-59,1)	58,7 (57,6-59,8)	0,935	0,809	-6,689; 8,306
Pre-pregnancy weight on antenatal record card up to 13th week of pregnancy*	260	58,2 (56,9-59,5)	59,2 (57,8-60,5)	0,920	0,963	-7,294; 9,220
Height (cm)	106	157,6 (156,4-158,9)	157,8 (156,5-159,1)	0,913	0,223	-5,148; 5,595
Second Trimester
Weight (kg)	178	62,4 (60,8-64,0)	62,2 (60,6-63,7)	0,993	-0,278	-2,660; 2,104
Systolic arterial pressure (mmHg)	180	109,3 (107,8-110,8)	103, 8 (102,2-105,5)	0,447	-5,443	-26,185; 15,299
Diastolic arterial pressure (mmHg)	180	65,7 (64,5-66,8)	65,9 (64,4-67,3)	0,409	0,185	-18,624; 18,994
Third Trimester
Weight (kg)	185	65,6 (64,2-67,1)	65,4 (64,0-66,9)	0,988	-0,186	-3,192; 2,821
Systolic arterial pressure (mmHg)	185	109,8 (108,3-111,2)	105,1 (103,6-106,6)	0,436	-4,638	-24,798; 15,522
Diastolic arterial pressure (mmHg)	185	65,9 (64,8-67,0)	67,6 (66,3-68,9)	0,332	1,649	-17,368; 20,665

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[1] Collaborations

AAA Damasceno: collection, analysis and interpretation of data, writing and revision of the manuscript. PS Mosquera: data processing and analysis, manuscript review. MB Malta: supervision of data collection, processing and analysis and manuscript review. AM: conception, data interpretation and critical manuscript review. MA Cardoso: design, analysis and interpretation of data, manuscript review, approval of the final version, public responsibility for the content of the article.