Table 1 Age and anthropometry in first-born and second-born men. Age data are mean ± SD; other data are means and 95% confidence intervals adjusted for other confounding factors in the multivariate models

From: Among overweight middle-aged men, first-borns have lower insulin sensitivity than second-borns

 

First-borns

Second-borns

p-value

n

26

24

 

Ethnicity (European descent)

92%

92%

0.99

Age (years)

44.9 ± 5.6

46.4 ± 5.4

0.37

Height (cm)

176.8 (171.0–180.5)

175.1 (169.7–180.5)

0.40

Weight (kg)

91.0 (83.6–98.4)

84.1 (76.9–91.3)

0.013

BMI (kg/m2)

29.1 (27.7–30.5)

27.5 (26.1–28.9)

0.004

Total body fat (%)

32.2 (27.3–37.1)

29.9 (25.1–34.7)

0.21

Android fat to gynoid fat ratio

1.27 (1.13–1.41)

1.23 (1.09–1.36)

0.42

Fat mass index (kg/m2)

9.36 (7.74–10.97)

8.26 (6.69–9.84)

0.068