Body Size at Birth and Age Related Decline in Cognitive Ability After Age 20.1 Years.

Abbreviations: CI, confidence interval.aDecline is a standardized residual score from a linear regression analysis where cognitive ability at age 67.9 years is predicted by cognitive ability at age 20.1 years.bAdjustments were made for length of gestation, father's occupational status in childhood, parity, mother's age and height at delivery, history of breastfeeding, age at testing cognitive ability at 20.1 years, and time interval between tests of cognitive ability from 20.1 to 67.9 years.cA further model adjusted for ‘b’ plus highest own achieved level of education. Unmarked associations remained as in the adjusted model ‘b’.dA further model adjusted for ‘b’ plus diagnoses of stroke and coronary heart disease. Unmarked associations remained as in the adjusted model ‘b’.