Table 1

Descriptive statistics showing characteristics of parents and offspring from the Midspan Family Study

MeanSDMeanSDMissing cases
n (%)
Fathers (n=1456)Mothers (n=1456)
Age (years)54.95.052.84.90
BMI (kg/m2)26.03.325.94.33 (0.1)*
n (%)n (%)
BMI 25–29.9 kg/m2746 (51.3)575 (39.5)–*
BMI ≥30 kg/m2161 (11.1)214 (14.7)–*
Smoking history†1176 (80.8)782 (53.7)0
All offspring (n=2308)Sons (n=1025)Daughters (n=1283)
Age (years)44.86.345.26.10
BMI (kg/m2)26.54.025.95.017 (0.7)‡
WC (cm)93.510.880.112.119 (0.8)‡
Triglycerides (mmol/L)1.931.511.310.8080 (3.5)
HDL cholesterol (mmol/L)1.300.331.510.36370 (16.0)
Glucose5.601.945.151.1869 (3.0)
Systolic BP (mm Hg)131.215.3123.915.625 (1.1)
Diastolic BP (mm Hg)79.111.070.910.025 (1.1)
Birth weight (kg)3.480.493.360.49457 (19.8)
n (%)n (%)
BMI 25–29.9 kg/m2456 (44.5)400 (31.6)–‡
BMI ≥30 kg/m2182 (17.8)229 (18.1)–‡
WC between action levels 1 and 2 (%)270 (26.4)252 (19.9)–‡
WC above action level 2 (%)195 (19.0)294 (23.2)–‡
Smoking history†575 (56.1)647 (50.4)0
Angina§39 (3.8)51 (4.0)0
Myocardial infarct¶38 (3.7)8 (0.6)22 (1.0)
Angina and/or myocardial infarct73 (7.1)56 (4.4)22 (1.0)
Cardiac ischaemia**18 (1.8)25 (1.9)21 (0.9)
Strokes4 (0.4)8 (0.6)0
Diabetes13 (1.3)13 (1.0)0
Metabolic syndrome201 (25.1)173 (15.4)387 (16.8)
  • *Missing cases are indicated in the parents BMI row.

  • †Smoking history=current or former smokers.

  • ††Missing cases are indicated in the offspring BMI and WC rows.

  • §Angina was based on Rose Angina Questionnaire.31

  • ¶Myocardial infarct was based on clinical history and/or ECG evidence.

  • **Ischaemia was based on ECG evidence.

  • BMI, body mass index; BP, blood pressure; HDL, high-density lipoprotein; WC, waist circumference.