Table 1 Baseline characteristics of mothers by BMI and depression status (current or previous history), Ontario, Canada, 2007–2010

From: The combined effects of maternal depression and excess weight on neonatal outcomes

Variable	Healthy weight (BMI 18.5–24.9 kg m^–²)						Overweight/obese (BMI ⩾25 kg m^–²)						P-value
	Not depressed (N=33 340, 47.2%)			Depressed (N=1761, 2.5%)			Not depressed (N=33 289, 47.2%)			Depressed (N=2215, 3.1%)
	Mean (s.d.)	No.	%	Mean (s.d.)	No.	%	Mean (s.d.)	No.	%	Mean (s.d.)	No.	%
Maternal age, years^a	30.4 (5.6)			29.2 (6.2)			30.4 (5.6)			29.4 (5.9)			<0.001
Parity	0.70 (0.92)			0.64 (0.89)			0.91 (1.11)			0.87 (1.16)			<0.001
Previous term births	0.65 (0.88)			0.57 (0.84)			0.84 (1.06)			0.79 (1.10)			<0.001
Previous preterm births	0.05 (0.27)			0.07 (0.30)			0.07 (0.31)			0.09 (0.33)			<0.001
Proportion of neighbourhood with education greater than high school	56.8 (13.5)			52.4 (13.6)			53.3 (13.0)			50.3 (13.9)			<0.001
Median neighbourhood family income, CAD^b	77 561 (30 402)			71 569 (27 423)			73 969 (25 804)			69 620 (24 096)			<0.001
Median proportion of labour force employed in neighbourhood^b	93.7 (4.4)			93.3 (5.2)			93.7 (4.5)			93.2 (5.2)			<0.001
Median proportion in labour force in neighbourhood^b	69.8 (9.8)			68.0 (10.5)			69.6 (10.0)			68.4 (10.9)			<0.001
Speaks English at home		25 251	86		1597	95		27 723	89		2033	96	<0.001
Maternal physical health problems		12 269	37		595	34		10 822	33		842	38	<0.001
Other maternal mental health problems		748	2.2		490	27.8		748	2.2		620	28.0	<0.001
Maternal drug problems		502	1.5		214	12		561	1.7		349	16	<0.001
Smoking		2995	9.2		474	28		3761	12		603	28	<0.001
Pregestational diabetes		278	0.8		16	0.9		788	2.4		60	2.7	<0.001
Attended any prenatal classes		8649	27		550	33		7341	23		598	29	<0.001
First trimester visit		2660	10.1		183	11.7		2676	9.1		202	10.0	0.001
Type of care provider													<0.001
None		183	0.6		2	0.1		134	0.4		9	0.4
Family practitioner		3320	10.0		217	12.4		2949	9.0		220	10.0
Midwife		2492	7.5		177	10.1		2548	7.74		232	10.6
Nurse practitioner		51	0.2		10	0.6		59	0.2		6	0.3
Obstetrician		17 576	53		721	41		17 920	54.4		903	41
Other		171	0.5		2	0.1		82	0.3		4	0.2
Not exclusive		9335	28		622	36		9241	28		826	38
Previous caesarean		3822	11.5		189	10.75		5486	16.6		335	15.2	<0.001
Infant male sex		17 123	52		880	50		16 930	51		1132	52	0.44
In vitro fertilization		548	1.9		31	2.0		702	2.4		45	2.2	<0.001

Abbreviations: BMI, body mass index; CAD, canadian dollar.
^aAge reported as the mean of the midpoint of the corresponding 5-year interval.
^bNeighbourhood-level characteristics derived from Statistics Canada data based on the postal code.

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Table 1 Baseline characteristics of mothers by BMI and depression status (current or previous history), Ontario, Canada, 2007–2010

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