Table 3

HR (95% CI) for any unintentional injury by IQ

IQ scoren (injury/no injury)Adjusted for ageAdjusted for age and childhood SES*Adjusted for age and adult SESMultiple adjustment (excluding education)Multiple adjustment (including education)
95798/43 6771.001.001.001.001.00
812 284/78 2251.16 (1.12 to 1.19)1.15 (1.11 to 1.18)1.14 (1.11 to 1.18)1.13 (1.09 to 1.17)1.09 (1.06 to 1.12)
721 630/124 8951.26 (1.22 to 1.30)1.23 (1.20 to 1.27)1.22 (1.19 to 1.26)1.19 (1.16 to 1.23)1.11 (1.08 to 1.15)
631 924/162 4321.41 (1.37 to 1.45)1.37 (1.33 to 1.41)1.34 (1.30 to 1.37)1.30 (1.26 to 1.33)1.17 (1.13 to 1.20)
545 049/204 1071.64 (1.59 to 1.68)1.58 (1.53 to 1.62)1.51 (1.47 to 1.55)1.43 (1.39 to 1.47)1.25 (1.22 to 1.29)
432 960/129 8461.74 (1.70 to 1.79)1.67 (1.62 to 1.72)1.59 (1.54 to 1.63)1.52 (1.48 to 1.57)1.30 (1.27 to 1.34)
324 246/87 9541.89 (1.83 to 1.94)1.80 (1.74 to 1.85)1.69 (1.64 to 1.74)1.61 (1.57 to 1.66)1.37 (1.33 to 1.41)
216 604/56 1442.02 (1.96 to 2.08)1.92 (1.86 to 1.98)1.79 (1.73 to 1.84)1.70 (1.65 to 1.76)1.43 (1.38 to 1.48)
17638/24 0622.11 (2.04 to 2.18)2.00 (1.93 to 2.07)1.84 (1.78 to 1.91)1.78 (1.71 to 1.84)1.48 (1.43 to 1.54)
p Value§<0.001<0.001<0.001<0.001<0.001
SD decrease198 133/911 3421.20 (1.20 to 1.21)1.18 (1.18 to 1.19)1.16 (1.15 to 1.16)1.15 (1.14 to 1.15)1.10 (1.09 to 1.10)
p Value<0.001<0.001<0.001<0.001<0.001
  • * Childhood SES and adult height.

  • Adjusted for age, conscription centre, year of birth, childhood SES, adult height, BMI, systolic blood pressure, and adult SES.

  • Adjusted for age, conscription centre, year of birth, childhood SES, adult height, BMI, systolic blood pressure, adult SES, and educational attainment.

  • § p for trend across nine categories of IQ score.