Participant characteristics providing at least one valid day of accelerometer data.

[Values are mean ± standard deviation, or †median (Inter-Quartile Range); SWE, Sweden; UK, United Kingdom; t-test to test for differences between pregnant (28–32 weeks of gestation) and non-pregnant women (SWE) or between men and women (UK), where *p2: average acceleration (g) where non-wear time was imputed by all wear-time data at similar time of the day for that participant; EWT: estimated wearing time].