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Table 3 Odds ratios for questionnaire response by cognition scores with adjustment for other early life factors and cognition at different ages

From: Early life factors, childhood cognition and postal questionnaire response rate in middle age: the Aberdeen Children of the 1950sstudy

  Cognition at 7 Cognition at 9 Cognition at 11
  OR† (95% CI) OR† (95% CI) OR† (95% CI)
Adjusted for       
   Sex 1.42 (1.36 to 1.49) 1.50 (1.43 to 1.57) 1.55 (1.47 to 1.62)
   Sex, Marital status at birth 1.42 (1.35 to 1.48) 1.49 (1.42 to 1.56) 1.54 (1.47 to 1.62)
   Sex, Father's occupation at birth & in 1962, Number of children 1.34 (1.27 to 1.41) 1.42 (1.35 to 1.49) 1.48 (1.40 to 1.56)
   Sex, Height & Weight at 1st medical exam 1.40 (1.34 to 1.47) 1.48 (1.41 to 1.55) 1.53 (1.46 to 1.61)
   Sex, Rutter B behavioral score 1.36 (1.29 to 1.42) 1.43 (1.36 to 1.51) 1.50 (1.42 to 1.58)
   Sex, All early life factors‡ 1.29 (1.22 to 1.36) 1.37 (1.30 to 1.45) 1.43 (1.36 to 1.52)
   Sex, Cognition at 7   - 1.36 (1.27 to 1.46) 1.46 (1.37 to 1.57)
   Sex, Cognition at 9 1.14 (1.06 to 1.22)   - 1.44 (1.30 to 1.59)
   Sex, Cognition at 11 1.08 (1.01 to 1.15) 1.09 (0.98 to 1.20)   -
  1. * Due to missing data for some variables, this analysis was restricted to a subset of 8,452 subjects.
  2. † Odds ratio for one standardized deviation increase in each cognition score using logistic regression.
  3. ‡ Adjusted for all early life variables (marital status at birth, father's occupation at birth & in 1962, number of children, height & weight at 1st medical exam, and Rutter B behavioural score)