Table 3 Linear associations between birth weight z-score and grip strength (Newton) stratified by body mass index categories at conscription in young Swedish males born at-term between 1973–1976.

From: Birth weight and grip strength in young Swedish males: a longitudinal matched sibling analysis and across all body mass index ranges

 

n

Crude

Adjusteda

Estimate (B)

95% confidence interval

Estimate (B)

95% confidence interval

BW Z-score

Underweight (BMI <18.5)

8,980

11.4

9.6, 13.2

11.2

9.4, 13.0

Normal weight (BMI 18.5–24.9)

115,623

15.7

15.1, 16.2

15.9

15.4, 16.4

Overweight (BMI 25–29.9)

15,663

17.2

15.7, 18.8

17.4

15.8, 19.0

Obese (BMI ≥30)

3,484

18.8

15.4, 22.1

18.5

15.1, 21.9

  1. Abbreviations: BMI indicates Body Mass Index; BW indicates Birth Weight.
  2. aAdjusted for: parity, maternal age, maternal diabetes, maternal hypertension, cesarean section, conscription office and highest parental education.
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