Table 3.

Accumulated sedentary time^c within discrete bout length categories among non-pregnant women and pregnant women by trimester of pregnancy.

	Non-pregnant			Pregnant			1st Trimester			2nd Trimester			3rd Trimester
	Mean	95% CI		Mean	95% CI		Mean	95% CI		Mean	95% CI		Mean	95% CI
Time in Specific Bout Length (% total sedentary time)
1 to 4 min bouts	29.0	28.2	29.7	27.4	25.5	29.3	29.7	23.9	35.5	27.6	25.8	29.4	25.2	21.5	28.9
5 to 9 min bouts	21.4	21.0	21.8	21.6a	20.7	22.5	23.2	21.2	25.1	21.3	20.2	22.4	20.7b	19.1	22.4
10 to 14 min bouts	13.2	13.0	13.4	13.8a	13.1	14.5	14.4	13.3	15.6	13.7	12.7	14.8	13.4	12.1	14.6
15 to 19 min bouts	8.9	8.7	9.1	9.4a	8.8	10.0	8.4	6.7	10.0	9.4	8.5	10.3	10.1	9.1	11.1
20 to 24 min bouts	6.5	6.3	6.7	6.0	5.3	6.7	5.6	3.7	7.5	6.0	5.3	6.7	6.4	5.5	7.4
25 to 29 min bouts	4.6	4.3	4.8	4.9	4.4	5.4	5.1	4.1	6.0	4.2	3.7	4.7	5.7	4.6	6.8
> 30 min bouts	16.5	15.6	17.3	16.9	15.1	18.8	13.7	9.3	18.1	17.8	15.4	20.2	18.5b	15.5	21.6
Day-to-day variability (CV%)
1 to 4 min bouts	4.2	4.1	4.4	4.2	3.6	4.8	4.2	3.2	5.1	4.2	3.3	5.2	4.2	3.5	4.8
5 to 9 min bouts	4.2	4.0	4.3	4.7	4.1	5.2	4.8	3.6	6.1	4.7	3.9	5.4	4.6	3.7	5.5
10 to 14 min bouts	2.6	2.6	2.7	3.0	2.6	3.5	3.3	2.0	4.7	3.1	2.5	3.7	2.7	2.2	3.1
15 to 19 min bouts	1.8	1.7	1.9	2.0	1.7	2.4	2.6	0.9	4.2	1.9	1.5	2.2	1.9	1.7	2.1
20 to 24 min bouts	1.3	1.2	1.4	1.4	1.2	1.6	1.3	0.9	1.7	1.3	1.1	1.5	1.5	1.2	1.8
25 to 29 min bouts	0.9	0.9	1.0	1.0	0.9	1.1	0.9	0.8	1.1	0.9	0.8	1.0	1.2b	1.0	1.4
≥ 30 min bouts	1.5	1.4	1.6	1.7	1.4	2.0	1.9	0.8	2.9	1.5	1.4	1.7	1.8	1.4	2.1

^aStatistically significant difference compared with non-pregnant women.

^bStatistically significant linear trend among pregnant women.

^cAll estimates are adjusted for age.