Table 3 Univariate (cOR) and multivariate (aOR) regression analyses of the risk factors associated with pregnant women weight status (post bariatric surgery, obesity and overweight).

Risk factors	Post-Bariatric vs. overweight				Obesity vs. overweight				Post-Bariatric vs. obese
	(n = 315)				(n = 1918)				(n = 315)
	cOR (95%CI)	P value	aOR^a (95%CI)	P value	cOR (95%CI)	P value	aOR^a (95%CI)	P value	cOR (95%CI)	p value	aOR^a (95%CI)	p value
Nationality
Non-Qatari	Ref				Ref		Ref		Ref
Qataris	10.300 (7.703–13.772)	0.000	10.125 (7.547–13.582)	0.000	1.298 (1.130–1.490)	0.000	1.161 (0.975–1.384)	0.094	7.938 (5.945–10.599)	0.000	10.109 (7.118–14.357)	0.000
Maternal age
< 35 years	Ref	Ref			Ref		Ref		Ref
≥ 35 years	1.433 (1.105–1.859)	0.007	1.148 (0.841–1.566)	0.834	1.476 (1.281–1.701)	0.000	1.093 (0.898–1.331)	0.374	0.971 (0.751–1.255)	0.821	NA
Parity
Nulliparous	Ref				Ref		Ref		Ref
Parity 1–4	1.079 (0.805–1.447)	0.611	1.019 (0.740–1.404)	0.908	1.524 (1.299–1.789)	0.000	1.457 (1.192–1.781)	0.000	0.708 (0.524–0.956)	0.024	0.787 (0.541–1.143)	0.208
Parity ≥ 5	2.327 (1.517–3.569)	0.000	1.166 (0.703–1.934)	0.553	2.717 (2.103–3.509)	0.000	2.085 (1.461–2.975)	0.000	0.856 (0.564–1.300)	0.467	0.856 (0.504–1.453)	0.565
Diabetes status
No DM	Ref	Ref			Ref		Ref		Ref
DM	0.844 (0.440–1.621)	0.611			2.346 (1.727–3.187)	0.000	1.880 (1.365–2.590)	0.000	0.360 (0.191–0.677)	0.002	0.262 (0.136–0.505)	0.000
Chronic/Essential HTN
No HTN	Ref		Ref		Ref		Ref		Ref
HTN	2.751 (1.297–5.837)	0.008	2.874 (1.202–6.870)	0.031	3.037 (1.883–4.898)	0.000	2.832 (1.576–5.090)	0.000	0.906 (0.461–1.780)	0.774	NA

Abbreviations: cOR, crude Odds Ratio; aOR, adjusted Odds Ratio; CI, Confidence Interval; Ref, reference group; DM, Diabetes Mellitus; HTN, Hypertension. Significant values are in bold. ^a Adjusted for the significant variables from the univariate analysis.

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