Table 1 Characteristics of participants in the PROBIT, Belarus, followed up at age 11.5 years

From: Prospective associations of parental smoking, alcohol use, marital status, maternal satisfaction, and parental and childhood body mass index at 6.5 years with later problematic eating attitudes

Characteristics

Total number of individuals for each variable (N)

Percentages (%) or mean (s.d.) or median (IQR) where specified (N=13 751)

Female (%)

13 751

48.5

Median (IQR) age at physical examination (years)

13 730

11.5 (11.3–11.8)

Urban vs rural (% in urban)

13 751

57.9

West vs East of Belarus (% in west)

13 751

52.6

Within intervention arm (%)

13 751

53.5

Mother’s alcohol intake from pregnancy to PROBIT II (N=12 531)a

 Consumed <1 unit per week

5412

43.2

 Prenatal only

88

0.7

 Postnatal only

6721

43.6

 Pre- and post-natal

310

2.5

Mother’s smoking from pregnancy to PROBIT II (N=12 339)

 None

10 517

85.2

 Prenatal only

81

0.7

 Postnatal only

1537

12.5

 Pre- and postnatal

204

1.7

Father’s smoking at 6.5 years (% in highest category)b

10 266

7.4

Father’s alcohol intake at 6.5 years (% in highest category)b

10 243

27.1

Marital status (% persistent marriage)

12 532

82.4

Mother’s satisfaction with husband (% perfectly satisfied) at 6.5 years

10 176

32.6

Mother’s satisfaction with child (% perfectly satisfied) at 6.5 years

12 575

63.5

Mother’s satisfaction with motherhood (% perfectly satisfied) at 6.5 years

12 539

78.0

Maternal BMI category (%) at PROBIT II (N=12 719)c

 Underweight

75

0.6

 Normal

7949

62.5

 Overweight

3265

25.7

 Obese

1430

11.2

Paternal BMI category (%) at PROBIT II (N=11 609)c

 Underweight

5

0.04

 Normal

5461

47.0

 Overweight

5010

43.2

 Obese

1133

9.8

Child BMI category (%) at PROBIT II (N=12 851)c

 Underweight

290

2.3

 Normal

11 293

87.9

 Overweight

993

7.7

 Obese

275

2.1

Child BMI category (%) at PROBIT III (N=13 741)c

 Underweight

338

2.5

 Normal

11 283

82.1

 Overweight

1732

12.6

 Obese

388

2.8

Highest household occupation (% non-manual workers)

12 836

56.6

Mother’s education (% completed university)

13 751

13.6

Father’s education (% completed university)

13 316

13.2

ChEAT scores ⩾85th percentile (that is, score ⩾22.5)

13 751

17.3

  1. Abbreviations: BMI, body mass index; ChEAT, Children’s Eating Attitudes Test;34 IQR, interquartile range; PROBIT, Promotion of Breastfeeding Intervention Trial; WHO, World Health Organization.
  2. aMother’s alcohol consumption ⩾1 unit per week by period or father’s alcohol consumption >4 units per week.
  3. bHighest category for father’s smoking was ⩾20 cigarettes per day.
  4. cCategories of BMI for underweight, overweight and obesity in children were defined by Cole et al.31, 32 and are mapped onto the WHO categories for adults. The WHO definitions were used for adults.
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