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Table 3 Follow-up postnatal characteristics of a subsample of participants from the first cohort of Alberta Pregnancy Outcomes and Nutrition (APrON) study in relation to breastfeeding exclusivity for 3 and 6 months 1,2

From: Predictors of exclusive breastfeeding: observations from the Alberta pregnancy outcomes and nutrition (APrON) study

Characteristics Exclusive breastfeeding
  For three months postpartum For six months postpartum
Total No Yes p-value Total No Yes p-value
n = 185 n = 217 n = 254 n = 46
Maternal characteristics         
Gestational weight gain3 , kg 15.90 (6.6) 15.91 (6.87) 15.45 (6.02) 0.5034 15.45 (6.32) 15.59 (6.61) 14.77 (5.34) 0.7194
BMI at 12 weeks postpartum3,5, kg/m 2 24.59 (5.53) 25.18 (6.07) 24.17 (5.19) 0.0024 24.47 (5.94) 24.48 (5.95) 23.82 (5.01) 0.0484
BMI categories at 12 weeks postpartum5, kg/m 2         
 Underweight (≤18.5) 3 (0.8) 1 (0.5) 2 (1.0) 0.1646 3 (1.0) 1 (0.7) 2 (1.3) 0.0496
 Normal (18.6-24.9) 200 (51.2) 85 (46.7) 115 (55.0)   153(52.8) 63 (45.3) 90 (59.6)  
 Overweight (25-29.9) 122 (31.2) 58 (31.9) 64 (30.6)   88 (30.3) 47 (33.8) 41 (27.2)  
 Obese (≥30) 66 (16.9) 38 (20.9) 28 (13.4)   46 (15.9) 28 (20.1) 18 (11.9)  
Infant characteristics         
Gender         
 Female 180 (44.8) 73 (39.5) 107 (49.3) 0.0607 140 (46.8) 118 (46.6) 22 (47.8) 0.9997
 Male 222 (55.2) 112 (60.5) 110 (50.7)   159 (53.2) 135 (53.4) 24 (52.2)
Gestational age3,8, wks 39 (2.0) 39.0 (2.0) 39.0 (2.0) 0.5914 39.0 (2.0) 39.0 (2.0) 39.0 (2.0) 0.9454
Birth weight9 , kg 3.44 (0.6) 3.38 (0.63) 3.49 (0.56) 0.2063,4 3.48 (0.46) 3.47 (0.46) 3.53 (0.49) 0.46410,11
Weight gain during the first 12 weeks9,10, kg 2.65 (0.70) 2.66 (0.75) 2.65 (0.66) 0.88511 2.63 (0.68) 2.61(0.68) 2.73(0.66) 0.31911
Vitamin/mineral supplement intake12         
 Yes 333 (92.2) 134 (89.3) 199 (94.3) 0.1237 184 (76.7) 148 (76.3) 36 (78.3) 0.9287
 No 28 (7.8) 16 (10.7) 12 (5.7)   56 (23.3) 46 (23.7) 10 (21.7)
  1. BMI: body mass index.
  2. 1Values are n (%), unless otherwise noted.
  3. 2Denominators vary due to missing data.
  4. 3Median (interquartile range (IQR)).
  5. 4Mann-Whitney U Test.
  6. 5BMI was calculated by dividing the weight in kilograms by square of height in meters.
  7. 6Fisher’s exact test.
  8. 7Yates’ correction for continuity.
  9. 8Calculated only among term infants due to initial exclusion of pre-term infants from the analyses.
  10. 9Calculated only among infants weighing >2.5 kilograms due to initial exclusion of low birth weight infants from the analyses.
  11. 10Mean (standard deviation (SD)).
  12. 11Independent-sample t-test.
  13. 12Calculated only among breast-fed infants.