Table 1

Characteristics of the sample of 1528 men and 1530 women in the Medical Research Council National Survey of Health and Development with at least one measure of grip strength at ages 53, 60–64 or 69 and known height and birth weight

MenMean (SD) or %WomenMean (SD) or %
NN
Grip strength (kg)
 53 years139847.7 (12.2)143427.7 (7.9)
 60–64 years100344.6 (11.6)105926.0 (7.4)
 69 years103640.2 (8.5)106224.1 (5.8)
Physical growth
 Birth weight (kg)15283.5 (0.5)15303.3 (0.5)
 Height growth parameters 2–26 years15091505
  Height (cm)0.095 (6.1)0.014 (5.8)
  Height tempo (%)−0.079 (6.1)−0.19 (7.2)
  Height velocity (%)0.23 (10.0)0.12 (10.6)
 Weight growth parameters 0–26 years15091505
  Weight (kg)−0.25 (4.3)−0.47 (4.3)
  Weight tempo (%)−0.49 (9.8)−0.20 (7.7)
  Weight velocity (%)−1.6 (26.2)−0.41 (28.2)
Motor development (months)
 Age at first sitting14146.6 (1.5)14246.6 (1.5)
 Age at first standing141611.4 (2.3)141911.3 (2.1)
 Age at first walking142413.6 (2.5)141613.6 (2.4)
Early socioeconomic conditions
 Father’s occupational class
  I and II34123.533923.5
  III70748.771949.8
  IV and V40527.938526.7
Adult factors
 Height (cm)
  53 years1428174.7 (6.6)1477161.6 (5.9)
  60–64 years1060174.8 (6.6)1148161.6 (5.9)
  69 years1038173.9 (6.4)1079160.6 (6.0)
 BMI (kg/m2)
  53 years142727.4 (4.0)146627.4 (5.4)
  63 years105927.9 (4.1)114727.9 (5.5)
  69 years103828.2 (4.6)107528.2 (5.8)
 Verbal memory (no. words)
  53 years138623.0 (6.2)145024.9 (6.2)
  63 years102023.0 (5.9)111425.4 (6.0)
  69 years101021.1 (6.0)105723.1 (6.0)
 No. health conditions 53 years
  080256.470247.6
  144831.754337.0
  214710.515911.3
  3+181.4574.1
 Smoking status 53 years
  Non-smoker or ex-smoker109476.5115077.7
  Smoker33623.533022.3
 Smoking status 60–64 years
  Non-smoker or ex-smoker97587.2105288.3
  Smoker13612.214011.7
 Smoking status 69 years
  Non-smoker or ex-smoker106589.7114091.3
  Smoker12210.21098.7
 Leisure-time physical activity 53 years
  Inactive67547.274550.3
  Intermediate26818.724016.2
  Active48634.049533.4
 Leisure-time physical activity 60–64 years
  Inactive67965.274562.9
  Intermediate13613.024014.4
  Active22721.849522.7
 Leisure-time physical activity 69 years
  Inactive65460.271060.6
  Intermediate11911.116213.5
  Active31428.925625.9
 Qualifications by 26 years
  Degree or higher21114.6805.5
  ‘A-level’ or equivalents41028.433823.4
  ‘O-level’ or equivalents20914.537125.7
  Less than ‘O-level’906.21339.2
  None52536.352236.1
 Own occupational class 53 years
  I and II77951.655536.6
  III57137.864142.2
  IV and V16110.732221.2
 Died during follow-up
  No135988.9141292.3
  Yes16911.11187.7
 Other attrition during follow-up
  No122580.2123280.5
  Yes30319.829819.5
  • Standardised score for childhood cognitive ability not presented for 1408 men and 1410 women as mean=0 and SD=1.

  • BMI, body mass index.