Table 1 Characteristics of 1018 mother–child pairs studied in comparison with the rest of the Southampton Women’s Survey cohort

From: Diet quality across early childhood and adiposity at 6 years: the Southampton Women’s Survey

 

Mother–child pairs (n=1018)

Remaining mother–child pairs (n=834)

P-value

Mother

 Age at child’s birth (years)

30.4 (3.8)

29.7 (3.8)

<0.001

 Height (cm)

163.7 (6.5)

162.7 (6.4)

0.001

 Prepregnancy BMI (kg m−2)

24.3 (22.2–27.5)

24.2 (21.8–28.1)

0.83

 Degree qualification or above, n (%)

238 (23.5)

151 (18.2)

<0.001

 Primiparous, n (%)

487 (47.8)

322 (38.7)

<0.001

 Smoked in pregnancy, n (%)

141 (13.9)

183 (22.2)

<0.001

 Serum 25(OH) D concentration (nmol l−1)

61.0 (41.3–86.1)

57.0 (41.0–83.0)

0.11

 Plasma n-6 PUFA concentration (μg ml−1)

506 (398–621)

520 (399–633)

0.14

 Gestational weight gain, n (%)

  

0.70

Inadequate

206 (21.8)

175 (23.4)

 

Adequate

287 (30.3)

218 (29.1)

 

Excessive

453 (47.9)

355 (47.5)

 

Child

 Sex, boys, n (%)

529 (52.0)

445 (53.6)

0.51

 Gestational age (weeks)

40.1 (39.3–41.0)

40.1 (39.2–41.0)

0.59

 Birthweight (g)

3520 (476)

3509 (472)

0.65

 Duration of breastfeeding (%)

   

Never breastfed

159 (15.9)

176 (23.8)

<0.001

<1 Month

211 (21.1)

152 (20.5)

 

1–3 Months

193 (19.3)

153 (20.7)

 

4–6 Months

182 (18.2)

109 (14.7)

 

7–11 Months

157 (15.7)

105 (14.2)

 

12 Months

98 (9.8)

45 (6.1)

 
  1. Abbreviations: 25(OH) D, 25-hydroxyvitamin D; BMI, body mass index; PUFA, polyunsaturated fatty acid.
  2. Data are presented as mean (s.d.), median (interquartile range) or n (percentage). Differences between the two groups of mother–child pair was conducted by t-test or Mann–Whitney rank-sum test for continuous variables and χ2-test for categorical variables.