Table 2.

BMI and sleep quality measurements throughout 4 antenatal visits

BMI group		11-14 weeks		18-22 weeks		28-32 weeks		> 34 weeks		F	P
	N	Mean	SD	Mean	SD	Mean	SD	Mean	SD
BMI (kg/m2)	780	24.0	4.7	25.2	4.5	27.1	4.5	28.2	4.8	1914.5	< 0.001*
< 18.5	61	17.3	1.0	18.8	1.2	20.8	1.5	21.9	1.8	13.2	< 0.001*
18.5-24.9	443	21.8	1.7	23.0	1.8	25.1	2.1	26.3	3.1	1049.3	< 0.001*
25-29.9	192	27.3	1.5	28.3	1.7	30.0	2.0	31.1	2.2	294.6	< 0.001*
≥ 30	84	33.4	3.3	34.0	3.1	35.5	3.5	36.6	4.1	185.2	< 0.001*
Sleep efficiency (%)	758	85.2	14.3	85.1	14.8	83.3	15.0	81.6	16.5	8.8	< 0.001*
< 18.5	59	83.7	15.2	83.4	15.3	82.6	16.9	80.9	19.1	1.9	0.137
18.5-24.9	431	84.9	13.6	85.1	14.9	83.3	14.5	82.3	15.8	3.6	0.013*
25-29.9	186	84.9	15.4	85.2	14.3	82.6	15.7	80.6	17.5	0.5	0.679
≥ 30	82	88.3	14.5	86.2	15.5	85.0	14.6	80.8	16.0	6.8	< 0.001*
PSQI Score	749	6.4	3.0	6.2	3.1	7.1	3.3	8.0	3.3	74.1	< 0.001*
< 18.5	58	6.3	2.9	6.2	3.5	6.6	3.3	7.9	3.3	3.4	0.026*
18.5-24.9	428	6.5	3.1	6.2	3.0	7.1	3.4	7.9	3.2	20.7	< 0.001*
25-29.9	182	6.4	3.0	6.0	3.4	7.0	3.2	8.0	3.3	20.6	< 0.001*
≥ 30	81	6.5	3.2	6.5	3.2	7.6	3.1	8.4	3.4	18.5	< 0.001*
Sleep latency (mins)	747	18.5	17.0	18.4	16.8	21.0	19.0	23.2	20.4	12.0	< 0.001*
< 18.5	58	18.4	18.0	17.4	18.7	20.4	18.3	20.4	17.2	3.0	0.041*
18.5-24.9	429	18.1	15.8	18.1	16.0	21.0	19.6	22.8	19.7	4.1	0.006*
25-29.9	179	17.0	14.3	17.3	16.2	19.9	18.0	22.1	17.4	4.5	0.004*
≥ 30	81	24.2	25.0	22.9	20.0	24.0	18.0	29.4	29.3	1.2	0.324
Sleep duration (hours)	760	7.1	1.5	7.0	1.5	6.6	1.5	6.5	1.7	23.0	< 0.001*
< 18.5	60	7.3	1.6	6.9	1.5	6.9	1.7	6.5	1.8	0.1	0.971
18.5-24.9	432	7.0	1.5	7.0	1.5	6.6	1.5	6.5	1.7	9.0	< 0.001*
25-29.9	186	7.1	1.6	7.0	1.6	6.6	1.5	6.5	1.8	3.0	0.03*
≥ 30	82	7.1	1.8	7.0	1.5	6.6	1.6	6.4	1.6	5.3	0.001*

Repeated measure ANOVA analysis. Statistical significant is defined as p < 0.05