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Table 1 Demographic and outcome data

From: Effects of lifestyle intervention on dietary intake, physical activity level, and gestational weight gain in pregnant women with different pre-pregnancy Body Mass Index in a randomized control trial

  Pre-pregnancy BMI ≤ 24.9 Pre-pregnancy BMI ≥ 25
Variables Control n = 27 Intervention n = 30 P-value Control n = 29 Intervention n = 27 P-value
Age (years) 29 ± 6 31 ± 3 0.06 32 ± 5 31 ± 4 0.41
Length of intervention (weeks) 0 27.83 ± 5.67   0 26.74 ± 6.17*  
Family annual income ($) 54,404 ± 33,689 53,564 ± 24,128 0.91 50,992 ± 23,199 56,772 ± 26,355 0.39
First Nations (number %) 1/27 2/30 0.62 4/29 3/27 0.92
Pre-pregnancy BMI 22.6 ± 1.9 21.6 ± 2.2 0.06 29.7 ± 1.3 29.5 ± 5.1 0.92
Gestational weeks (week) 39.6 ± 0.9 39.7 ± 1.1 0.78 39.8 ± 1.1 39.7 ± 1.3 0.92
Gestational weight gain (kg) 16.23 ± 4.38 12.9 ± 3.72 0.03 14.39 ± 7.05 15.21 ± 7.5 0.26
EGWG (2009 IOM guidelines number %) 10/27 (37%) 3/30 (10%) 0.03 20/29 (69%) 18/27 (67%) 0.67
Birth weight (g) 3,633 ± 555 3,356 ± 474 0.047 3650 ± 481 3,665 ± 506 0.92
Large-for-gestational-age (n %) 3/27 (11%) 2/30 (7%) 0.902 1/29 (3%) 4/27 (15%) 0.13
Gestational diabetes (n %) 0/27 0/30 NS 3/29 (10%) 1/27 (4%) 0.307
Cesarean section (n %) 0/27 0/30 NS 2/29 (7%) 0/27 0.503
  1. Values were expressed in mean ± SD or case/total (0%). P values with underline are statistical significant.
  2. *The p value between the pre-pregnancy BMI ≤ 24.9 intervention group and the Pre-pregnancy BMI ≥ 25 intervention group is 0.49.