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Table 2 Newborn birth weight and offspring characteristics in the exercise and control groups (mean (SD) and N (%)), analyzed by intention to treat (ITT), per protocol (≥ 80% of exercise sessions) and analyses of 100% exercise adherence (24 exercise sessions)

From: Exercise in pregnant women and birth weight: a randomized controlled trial

  ITT Per Protocol 100% exercise adherence
  EG (n = 52) CG (n = 53) p-value EG (n = 21) CG (n = 53) p-value EG (n = 14) CG (n = 53) p-value
Birth weight (g) 3477 (424) 3542 (464) 0.4 3451 (450) 3542(464) 0.4 3310 (463) 3542 (464) 0.1
< 2500 (g) 1 (1.9) 1 (1.9)   0 (0) 1 (1.9)   0 (0) 1 (1.9)  
2500 to < 4000 (g) 46 (88.5) 43 (81.1)   18 (85.7) 43 (81.1)   13 (92.9) 43 (81.1)  
≥ 4000 (g) 5 (9.6) 9 (17.0) 0.5 3 (14.3) 9 (17.0) 0.7 1 (7.1) 9 (17.0) 0.6
Birth lenght (cm) 50.2 (2.0) 50.8 (1.9) 0.1 49.8 (1.7) 50.8 (1.9) 0.04 49.5 (1.7) 50.8 (1.9) 0.03
Head circumference (cm) 34.9 (1.4) 35.1 (1.6) 0.5 34.7 (1.4) 35.1 (1.6) 0.3 34.4 (1.7) 35.1 (1.6) 0.2
Gestational age 39.9 (1.2) 39.6 (1.2) 0.2 39.7 (1.0) 39.6 (1.2) 0.8 39.6 (1.1) 39.6 (1.2) 0.9
Apgar score 1 min 8.8 (0.8) 8.6 (1.2) 0.3 9.1 (0.3) 8.6 (1.2) 0.02 9.1 (0.4) 8.6 (1.2) 0.02
Apgar score 5 min 9.6 (0.6) 9.4 (0.8) 0.4 9.6 (0.6) 9.4 (0.8) 0.2 9.7 (0.6) 9.4 (0.8) 0.2
Gender          
   - Boys 24 (46.2) 27 (50.9)   11 (52.4) 27 (50.9)   6 (42.9) 27 (50.9)  
   - Girls 28 (53.8) 26 (49.1) 0.6 10 (47.6) 26 (49.1) 0.8 8 (57.1) 26 (49.1) 0.9