Variables | First trimester ( | Second trimester ( | Third trimester ( |
---|---|---|---|
Age (years) | 29.96±3.77 | 30.14±4.25 | 29.99±3.88 |
Prepregnancy BMI (kg/m2) | 20.77±2.94 | 20.52±2.78 | 20.57±2.53 |
Occupational status | |||
Employed or studying | 295 (75.45) | 285 (72.70) | 301 (76.01) |
Unemployed | 96 (24.55) | 107 (27.30) | 95 (23.99) |
Educational status | |||
<High school | 15 (3.84)* | 33 (8.42)* | 12 (3.03)* |
High school | 134 (34.27) | 154 (39.29) | 128 (32.32) |
Some college/graduate | 242 (61.89) | 205 (52.29) | 256 (64.65) |
Annual per capita income (¥) | |||
≤24,000 | 14 (3.58) | 18 (4.59) | 10 (2.53) |
>24,000–36,000 | 48 (12.28) | 53 (13.52) | 44 (11.11) |
>36,000 | 329 (84.14) | 321 (81.89) | 342 (86.36) |
Parity | |||
0 | 303 (77.49) | 301 (76.79) | 314 (79.29) |
≥1 | 88 (22.51) | 91 (23.21) | 82 (20.71) |
Maternal race | |||
Han | 374 (95.65) | 381 (97.19) | 387 (97.73) |
Minority | 17 (4.35) | 11 (2.81) | 9 (2.27) |
Prepregnancy cigarette smoking | |||
No | 382 (97.70) | 375 (95.66) | 385 (97.22) |
Yes | 9 (2.30) | 17 (4.34) | 11 (2.78) |
Region of residence | |||
City | 316 (80.82) | 305 (77.81) | 336 (84.85) |
Countryside | 75 (19.18) | 87 (22.19) | 60 (15.15) |
Gestation scores | Accumulated ≥ 10 MET-hours/week | Accumulated < 10 MET-hours/week | |||
---|---|---|---|---|---|
Mean±SD | Mean±SD | ||||
First trimester ( | 22 (5.63) | 344.12±146.02 | 369 (94.37) | 219.14±72.35 | 0.000 |
Second trimester ( | 29 (7.40) | 297.02±128.67 | 363 (92.60) | 217.41±72.02 | 0.000 |
Third trimester ( | 26 (6.57) | 304.74±105.33 | 370 (93.43) | 217.59±79.84 | 0.037 |
Intensity | Gestation | Mean | SD | Min | 25th | Median | 75th | Max | |
---|---|---|---|---|---|---|---|---|---|
Sedentary | First trimester | 90.92 | 24.16 | 39.56 | 72.94 | 88.55 | 106.40 | 163.80 | |
Second trimester | 83.99 | 23.23 | 42.49 | 65.32 | 79.80 | 99.62 | 159.60 | 0.001 | |
Third trimester | 87.51 | 24.23 | 29.62 | 69.30 | 82.78 | 101.50 | 163.80 | ||
Light | First trimester | 106.76 | 53.11 | 1.26 | 75.34 | 107.37 | 133.88 | 292.60 | |
Second trimester | 105.95 | 51.06 | 4.19 | 67.74 | 107.59 | 137.18 | 293.10 | 0.753 | |
Third trimester | 108.16 | 54.68 | 10.14 | 69.54 | 108.28 | 139.13 | 286.55 | ||
Moderate | First trimester | 27.70 | 39.58 | 0.00 | 4.84 | 10.78 | 39.14 | 334.85 | |
Second trimester | 29.50 | 41.44 | 0.00 | 6.00 | 11.40 | 37.43 | 316.24 | 0.047 | |
Third trimester | 27.13 | 40.40 | 0.00 | 4.84 | 10.82 | 28.31 | 245.76 | ||
Vigorous | First trimester | 0.06 | 0.29 | 0.00 | 0.00 | 0.00 | 0.00 | 3.01 | |
Second trimester | 0.07 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 3.01 | 0.103 | |
Third trimester | 0.05 | 0.29 | 0.00 | 0.00 | 0.00 | 0.00 | 3.01 |
Type of exercise | First trimester ( | Second trimester ( | Third trimester ( | ||||
---|---|---|---|---|---|---|---|
% | % | % | |||||
Climbing the stairs | 258 | 65.98 | 272 | 69.39 | 252 | 63.64 | 0.229 |
Slow walking | 322 | 82.35 | 347 | 88.52 | 359 | 90.66 | 0.001 |
Quick walking | 95 | 24.30 | 109 | 27.81 | 103 | 26.01 | 0.535 |
Walking quickly up hills | 30 | 7.67 | 32 | 8.16 | 18 | 4.55 | 0.091 |
Jogging | 37 | 9.46 | 25 | 6.38 | 17 | 4.29 | 0.014 |
Prenatal exercise class | 19 | 4.86 | 16 | 4.08 | 8 | 2.02 | 0.089 |
Swimming | 8 | 2.05 | 3 | 0.77 | 0 | 0.00 | 0.003 |
Dancing | 25 | 6.39 | 25 | 6.38 | 17 | 4.29 | 0.341 |
Type | Gestation | Mean | SD | Min | 25th | Median | 75th | Max | |
---|---|---|---|---|---|---|---|---|---|
Inactivity | First trimester | 101.88 | 29.96 | 41.08 | 79.44 | 99.69 | 119.00 | 189.00 | |
Second trimester | 94.29 | 28.31 | 45.86 | 71.20 | 90.52 | 109.40 | 197.40 | 0.010 | |
Third trimester | 99.00 | 29.61 | 35.92 | 77.50 | 93.86 | 116.69 | 201.60 | ||
Household/caregiving | First trimester | 31.10 | 31.57 | 0.00 | 12.43 | 22.64 | 38.15 | 223.36 | |
Second trimester | 33.37 | 29.68 | 1.26 | 14.57 | 23.98 | 39.93 | 255.54 | 0.176 | |
Third trimester | 31.44 | 28.49 | 3.19 | 13.30 | 22.64 | 40.05 | 216.71 | ||
Occupational | First trimester | 75.82 | 56.60 | 0.00 | 36.19 | 74.90 | 99.05 | 330.37 | |
Second trimester | 77.92 | 60.04 | 0.00 | 32.87 | 74.90 | 101.35 | 364.00 | 0.323 | |
Third trimester | 76.10 | 54.00 | 0.00 | 33.57 | 74.90 | 100.71 | 304.36 | ||
Sports/exercise | First trimester | 5.42 | 9.92 | 0.00 | 1.00 | 4.78 | 5.39 | 115.5 | |
Second trimester | 5.63 | 6.46 | 0.00 | 1.38 | 4.94 | 6.00 | 43.27 | 0.001 | |
Third trimester | 5.18 | 6.72 | 0.00 | 0.92 | 4.84 | 5.93 | 41.95 | ||
Transportation | First trimester | 11.44 | 12.41 | 0.00 | 2.10 | 8.75 | 14.49 | 92.75 | |
Second trimester | 11.86 | 11.16 | 0.00 | 3.36 | 8.75 | 17.36 | 77.00 | 0.255 | |
Third trimester | 11.27 | 13.80 | 0.00 | 2.10 | 8.75 | 14.00 | 124.25 |