Table 1.

Demographic characteristics of participants in the combined dataset (controlled-setting and real-world), controlled-setting position dataset, and real-world dataset^a.

Characteristic	Pregnant participants			Real-world dataset bed partner (n = 13)
	Combined controlled-setting and real-world datasets (n = 39)	Controlled-setting dataset (n = 24)	Real-world dataset (n = 15)
Age (years)	30.6 ± 4.7 30 (27.5–32.5) 21, 44	29.5 ± 4.3 29.0 (26.8–31.3) 24, 44	32.3 ± 5.1 32 (29.5–36.5) 21, 40	32.7 ± 4.6 32 (30.0–36.0) 24, 41
Gravida	NC	NC	1 (1–2) 1, 3	NA
Parity	NC	NC	0 (0–1) 0, 2	NA
At time of data collectionb
Gestational age (days)	234 ± 23.1 227 (217–255)c 196, 277	236 ± 24 229 (218–259) 196, 277	231 ± 23 225 (215–245) 196, 272	NA
Height (meters)	1.64 ± 0.07 1.64 (1.61–1.67) 1.45, 1.80	1.65 ± 0.05 1.64 (1.63–1.65)c 1.55, 1.79	1.64 ± 0.09 1.63 (1.60–1.70) 1.45, 1.80	1.77 ± 0.07 1.78 (1.73–1.80) 1.63, 1.88
Weight (kilograms)	79.2 ± 13.9 76.0 (70.3–86.5) 52.4, 108.6	77.7 ± 14.7 75.2 (68.8–85.2) 52.4, 106.6	81.5 ± 12.6 77.4 (72.9–90.0) 66.8, 108.6	88.4 ± 25.0 85.0 (70.5–97.7) 61.4, 151.4
Body mass index (kg/m2)	29.4 ± 5.7 28.7 (26.0–31.9)c 21.0, 51.8	28.7 ± 5.1 27.9 (25.1–31.3) 21.0, 39.6	30.6 ± 6.6 28.7 (27.1–32.3)c 23.8, 51.8	28.5 ± 9.7 26.2 (22.5–30.2)c 19.4, 57.3

Abbreviations: NA, not applicable; NC, not collected.

^aFor continuous variables, the mean ± standard deviation is presented on the first line of each cell, the median (25th–75th percentile, i.e., interquartile range) is presented on the second line of each cell, and the minimum and maximum are presented on the third line of each cell. For categorical variables, the median (25th–75th percentile, i.e., interquartile range) is presented on the first line of each cell, and the minimum and maximum are presented on the second line of each cell.

^bFirst night of video recording for real-world dataset.

^cIndicates that the continuous variable is non-normally distributed.