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Table 2 Results from the per-protocol and intention-to-treat analyses

From: Mighty Mums – a lifestyle intervention at primary care level reduces gestational weight gain in women with obesity

Variable Intention-to-treat population Per-protocol population
  Intervention
Mean (SD)
Median (range)
(n = 438)
Controls
Mean (SD)
Median (range)
(n = 871)
Adjusted
p-valuea
Intervention
Mean (SD)
Median (range)
(n = 116)
Controls
Mean (SD)
Median (range)
(n = 845)
Adjusted
p-valuea
Week of delivery 39.1 (2.5)
40.0
(24–42)
n = 429
39.8 (2.0)
40.0
(23–42)
n = 866
0.001 39.6 (1.5)
40.0
(36–42)
39.8 (2.0)
40.0
(23–42)
0.142
Weight change: from first pregnancy visit to last pregnancy visit, kg 10.3 (6.1)
10.0
(−6.0–41.0)
11.2 (6.9)
11.0
(−15.0–46.0)
0.695 8.9 (6.0)
9.00
(−6.0–28.0)
11.2 (6.9)
11.0
(−15.0–46.0)
0.031
Weight change: from first pregnancy visit to postpartum check-up, kg 1.4 (6.4)
1.0
(−19.0–23.0)
1.6 (6.5)
2.0
(−27.0–27.0)
0.731 −0.3 (6.0)
−1.0
(− 17.0–18.0)
1.6 (6.5)
2.00
(−27.0–27.0)
0.019
Child weight at delivery, g 3591 (594)
3605
(830–5430)
n = 420
3695 (637)
3705
(418–5760)
n = 866
0.037 3603 (505)
3515
(2480–5430)
n = 113
3703 (627)
3705
(418–5760)
0.300
  n (%) n (%)   n (%) n (%)  
GWG < 7 kg 120 (27.4) 204 (23.4) 0.882 43 (37.1) 194 (23.0) 0.036
Macrosomia 22 (5.0) 77 (8.8) 0.017 5 (4.3) 76 (9.0) 0.172
SGAb 34 (7.8) 45 (5.2) 0.196 10 (8.6) 38 (4.5) 0.199
  1. Values represent mean (SD) and median (range) for continuous variables, and n (%) for categorical variables
  2. aAdjusted for weeks pregnant at enrolment, height at enrolment, country of birth (mother), translator needed, main occupation, and BMI at enrolment transformed to 15 weeks
  3. bSmall for gestational age