Table 7.

Multiple ordered logistic regression models for amniotic fluid index for elements of (A) the adapted conflict-related stress questionnaire and (B) the Colombian biopsychosocial risk assessment^a.

A. AFI and interest in daily activitiesb	OR ± SE	P	95% CI	Overall model
GA at sonography (week)	0.93 ± 0.06	0.308	0.82, 1.06	P = 0.0359 Pseudo R2 = 0.118
Lack of interest for daily activities (0 = none, 1 = mild, 2 = moderate, 3 = severe)
Mild	2.28 ± 1.70	0.270	0.53, 9.89
Moderate	10.59 ± 14.60	0.089	0.70, 159.21
Severe	8.44 ± 8.07	0.026	1.29, 54.91
Maternal age (yr)	0.93 ± 0.04	0.087	0.86, 1.01
B. AFI and low family supportc	OR ± SE	P	95% CI	Overall model
GA at sonography (week)	0.90 ± 0.06	0.114	0.79, 1.02	P = 0.0112Pseudo R2 = 0.110
Folic acid supplementation (no = 0, yes = 1)	0.30 ± 0.18	0.048	0.09, 0.99
Low or no family supportd	9.05 ± 9.39	0.034	1.18, 69.25

^aAFI, Amniotic fluid index expressed as centiles as follows: AFI <25th centile (<12.3 cm), ≤25th and ≥75th centile (12.3–16 cm) and >75th centile (>16 cm) according to our population's AFI distribution.

^bModel A: n = 50. VIF = 1.03. Condition number: 12.03. Variables that were included but were not retained in the final model (P > 0.10): maternal age, taking folic acid supplements, decreased number of meals because of lack of resources, eating more eggs/week, sonography-estimated fetal weight.

^cModel B: n = 50. VIF = 1.01. Condition number: 12.50. Variables that were included but were not retained in the final model (P > 0.10): taking folic acid supplements, decreased number of meals because of lack of resources, eating more eggs/week, sonography-estimated fetal weight.

^dLow or no family support was categorized as: 0 = moderate or strong, 1 = low or no family support.