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Table 1 Participant characteristics

From: The effect of a lifestyle intervention in obese pregnant women on gestational metabolic profiles: findings from the UK Pregnancies Better Eating and Activity Trial (UPBEAT) randomised controlled trial

  Participants with at least one metabolic profile analysed (analysis sample)
n = 1158a
All eligible participants in the six contributing centres
n = 1194a
Control
n = 577
Intervention
n = 581
Control
n = 593
Intervention
n = 601
BMI, n (%)
 30–34.9 kg/m2 273 (47.3) 287 (49.4) 279 (47) 296 (49.3)
 35–39.9 kg/m2 203 (35.2) 177 (30.5) 209 (35.2) 185 (30.8)
 ≥ 40 kg/m2 101 (17.5) 117 (20.1) 105 (17.7) 120 (20)
Ethnicity, n (%)
 White 389 (67.4) 384 (66.1) 396 (66.8) 397 (66.1)
 Asian 38 (6.6) 43 (7.4) 43 (7.3) 45 (7.5)
 Black 120 (20.8) 127 (21.9) 123 (20.7) 130 (21.6)
 Other 30 (5.2) 27 (4.6) 31 (5.2) 29 (4.8)
Parity, n (%)
 Primiparous 260 (45.1) 257 (44.2) 266 (44.9) 265 (44.1)
 Multiparous 317 (54.9) 324 (55.8) 327 (55.1) 336 (55.9)
Age, n (%)
 < 25 years 97 (16.8) 85 (14.6) 100 (16.9) 90 (15)
 25–29 years 141 (24.4) 165 (28.4) 147 (24.8) 169 (28.1)
 30–34 years 187 (32.4) 174 (29.9) 188 (31.7) 182 (30.3)
 ≥ 35 years 152 (26.3) 157 (27) 158 (26.6) 160 (26.6)
Gestational diabetes, n (%)
 Yes 146 (25.3) 137 (23.6) 148 (25.0) 137 (22.8)
 No 366 (63.4) 344 (59.2) 370 (62.4) 351 (58.4)
 Missing 65 (11.3) 100 (17.2) 75 (12.6) 113 (18.8)
Centre, n (%)
 Bradford 19 (3.3) 22 (3.8) 25 (4.2) 28 (4.7)
 Glasgow 130 (22.5) 132 (22.7) 131 (22.1) 134 (22.3)
 Manchester 67 (11.6) 67 (11.5) 70 (11.8) 69 (11.5)
 Newcastle 120 (20.8) 116 (20) 122 (20.6) 120 (20)
 St George’s, London 53 (9.2) 55 (9.5) 54 (9.1) 57 (9.5)
 St Thomas’s, London 188 (32.6) 189 (32.5) 191 (32.2) 193 (32.1)
First clinic visit
n (%) 538 (93.2) 545 (93.8) 593 (100.0) 601 (100.0)
 Median (IQR) gestation, weeks 17.0 (16.1–17.9) 17.0 (16.1–18.0) 17.0 (16.1–17.9) 17.0 (16.1–18.0)
Second clinic visit
n (%) 500 (86.7) 477 (82.1) 591 (99.7) 598 (99.5)
 Median (IQR) gestation, weeks 27.7 (27.3–28.1) 27.7 (27.3–28.1) 27.7 (27.3–28.3) 27.7 (27.3–28.1)
Third clinic visit
n (%) 407 (70.5) 374 (64.4) 524 (88.4) 485 (80.7)
 Median (IQR) gestation, weeks 34.7 (34.3–35.1) 34.6 (34.3–35.1) 34.7 (34.3–35.3) 34.7 (34.3–35.3)
  1. aThe 1158 participants whose results are in the first two columns are a subgroup of the 1194 whose results are presented in the last two columns. n number, IQR interquartile range