Table 2. Association between sociodemographics characteriscs and BMI evolution according to the Atalah curve during prenatal care.

Variables	All women					Women with adequate BMI in the first prenatal visit					Women with overweight BMI in the last prenatal visit
	Stag	Incr	OR (CI 95%)*			Stag	Incr	OR (CI 95%)*			Stag	Incr	OR (CI 95%)*
	n	n				n	n				n	n
Age
≤ 19	99	36	0.74	(0.48–1.12)		46	18	0.86	(0.47–1.58)		15	6	0.96	(0.35–2.61)
20–34	574	154	Ref			231	78	Ref			138	53	Ref
35–39	89	25	0.96	(0.59–1.54)		40	11	1.23	(0.60–2.51)		27	13	0.80	(0.38–1.66)
≥ 40	20	6	0.89	(0.35–2.27)		8	3	0.90	(0.23–3.48)		7	2	1.24	(0.27–6.68)
Ethnicity
White	375	116	Ref			163	58	Ref			88	42	Ref
Non-White	405	104	1.20	(0.89–1.63)		161	51	1.12	(0.73–1.73)		99	32	1.48	(0.86–2.54)
Education Level
Elementary School	157	41	1.151.15	(0.7777–1.70)		55	11	2.11	(1.058–4.25)		46	19	0.87	(0.45–1.69)
High School	448	134	Ref			187	79	Ref			97	35	Ref
Graduation	175	44	1.19	(0.81–1.74)		81	19	1.80	(1.02–3.17)		44	19	0.84	(0.43–1.62)
Parity
Primiparous	366	122	Ref	160	59	Ref	72	32	Ref
Multiparous	416	99	1.40	(1.04–1.89)		165	51	1.19	(0.77–1.84)		115	42	1.22	(0.70–2.10)
Hypertension
No	704	201	Ref			307	101	Ref			169	65	Ref
Yes	77	20	1.10	(0.66–1.84)		18	9	0.66	(0.29–1.51)		17	9	0.73	(0.31–1.71)
Diabetes
No	733	213	Ref			316	109	Ref			175	67	Ref
Yes	47	7	1.95	(0.87–4.38)		9	1	3.10	(0.39–24.79)		10	6	0.64	(0.22–1.82)
Planned pregnancy
Yes	391	112	Ref			170	59	Ref			94	41	Ref
No	391	108	1.04	(0.77–1.40)		155	50	1.08	(0.70–1.66)		93	33	1.23	(0.72–2.11)
Smoking
No	725	208	Ref			303	105	Ref			168	70	Ref
Yes	56	13	1.24	(0.66–2.30)		22	5	1.52	(0.56–4.13)		18	4	1.88	(0.61–5.74)
Health insurance
Private	248	71	Ref			115	34	Ref			57	26	Ref
Public	532	149	1.02			(0.74–	1.41)	209			75	0.82	(0.52–2.17)

Abbreviations: BMI, body mass index; CI, confidence interval; Incr, increased; OR, odds ratio; ref, reference level; Stag, stagnant.

* chance of increase in the Atalah curve.