Table 2 Sedentary behavior (SED) in hr./day, percent time in SED (SED%), correlations (r), and Intraclass Correlation Coefficients (ICC) between activPAL and GT3X, the Sedentary Behavior Two Domain Questionnaire (SB2D), and the Pregnancy Physical Activity Questionnaire (PPAQ)
From: Validity of self-reported and objectively measured sedentary behavior in pregnancy
|  | 1st Trimester (< 14 weeks) | 2nd Trimester (20–22 weeks) | 3rd Trimester (32–34 weeks) | ||||||
|---|---|---|---|---|---|---|---|---|---|
mean (SD) | r | ICC | mean (SD) | r | ICC | mean (SD) | r | ICC | |
SED, hrs per day | |||||||||
 activPAL | 9.63 (1.55) | 1.0 | 1.0 | 9.54 (1.24) | 1.0 | 1.0 | 9.43 (1.29) | 1.0 | 1.0 |
 GT3X a | 9.50 (1.38) | 0.62 | 0.61 | 9.08 (1.39) | 0.58 | 0.55 | 9.08 (1.28) | 0.54 | 0.52 |
 SB2D | 5.75 (2.20) | 0.48 | 0.15 | 5.89 (2.51) | 0.26 | 0.08 | 6.12 (3.06) | 0.37 | 0.13 |
 PPAQb | 8.17 (3.27) | 0.42 | 0.28 | 8.49 (3.39) | 0.24 | 0.14 | 7.95 (2.78) | 0.28 | 0.18 |
SED% | |||||||||
 activPAL | 0.64 (0.10) | 1.0 | 1.0 | 0.63 (0.09) | 1.0 | 1.0 | 0.63 (0.09) | 1.0 | 1.0 |
 GT3Xa | 0.66 (0.08) | 0.66 | 0.62 | 0.64 (0.08) | 0.64 | 0.63 | 0.64 (0.08) | 0.66 | 0.65 |
 SB2D – Likert | 0.57 (0.21) | 0.44 | 0.32 | 0.55 (0.24) | 0.52 | 0.31 | 0.60 (0.21) | 0.45 | 0.33 |
 PPAQ |  | n/a |  |  | n/a |  |  | n/a |  |