Table 2.

Differences in mean grip strength at age 46 years per 1 standard deviation increase in BMI at ages 10 to 46 years and in BF% and WHR at age 46 years (N = 7547)

	Model	Differences in mean grip strength (kg) (95% CI)
		Males (N = 3671)	Females (N = 3876)
BMI at 10 years	1	0.79 (0.49, 1.09)	0.62 (0.43, 0.81)
	2	0.86 (0.57, 1.16)	0.66 (0.48, 0.84)
	3	0.89 (0.59, 1.19)	0.68 (0.51, 0.86)
	4	0.88 (0.59, 1.18)	0.69 (0.51, 0.86)
BMI at 16 years	1	1.36 (1.01, 1.70)	0.60 (0.40, 0.80)
	2	1.46 (1.12, 1.81)	0.70 (0.51, 0.90)
	3	1.45 (1.10, 1.79)	0.70 (0.51, 0.89)
	4	1.41 (1.07, 1.75)	0.72 (0.53, 0.91)
BMI at 30 years	1	1.05 (0.77, 1.33)	0.20 (0.02, 0.39)
	2	1.12 (0.85, 1.40)	0.38 (0.20, 0.56)
	3	1.10 (0.83, 1.38)	0.41 (0.23, 0.59)
	4	1.09 (0.81, 1.36)	0.49 (0.31, 0.67)
BMI at 46 years	1	1.26 (0.97, 1.55)	0.19 (0.01, 0.38)
	2	1.27 (0.99, 1.55)	0.33 (0.15, 0.51)
	3	1.26 (0.98, 1.54)	0.38 (0.20, 0.56)
	4	1.32 (1.04, 1.60)	0.49 (0.31, 0.67)
BF% at 46 years	1	0.36 (0.08, 0.65)	0.26 (0.08, 0.43)
	2	0.37 (0.09, 0.65)	0.12 (−0.05, 0.29)
	3	0.35 (0.07, 0.63)	0.17 (−0.01, 0.34)
	4	0.39 (0.11, 0.67)	0.28 (0.10, 0.45)
WHR at 46 years	1	−0.13 (−0.42, 0.16)	−0.17 (−0.35, 0.01)
	2	−0.10 (−0.39, 0.18)	−0.05 (−0.22, 0.13)
	3	−0.10 (−0.39, 0.19)	−0.01 (−0.19, 0.16)
	4	0.00 (−0.30, 0.29)	0.06 (−0.12, 0.23)

BF%, body fat percentage; BMI, body mass index; CI, confidence interval; WHR, waist–hip ratio.

Model adjustments: 1: unadjusted (P‐values from formal tests of sex interaction, P = 0.44 for BMI at age 10, P < 0.001 for BMI at ages 16, 30, and 46 years, P = 0.53 for BF% and P = 0.83 for WHR); 2: adjusted for height at 46 years; 3: Model 2 + father's occupational class at birth and physical activity at age 10 years; 4: Model 3 + educational level attained, own occupational class, and physical activity at age 46 years. Results are combined from analyses run across 20 imputed datasets.