Table 4

The relationship between age of Tanner 2 and WHtR and BMI by linear regression

Index	N	Coefficient B₀ (95% CI)	SE	Standardised coefficients B₁	t	p
B₂ for girls
WHtR	2256	−8.89 (−9.97 to 7.80)	0.55	−0.32	−16.06	<0.001
BMI Z-score	2258	−0.44 (−0.48 to 0.39)	0.02	−0.37	−18.81	<0.001
PH₂ for girls
WHtR	1093	−1.90 (−3.41 to 0.40)	0.77	−0.08	−2.49	0.013
BMI Z-score	1093	−0.14 (−0.20 to 0.07)	0.03	−0.12	−4.16	<0.001
PH₂ for boys
WHtR	356	0.65 (−1.25 to 2.55)	0.96	0.04	0.67	0.501
BMI Z-score	356	0.02 (−0.10 to 0.13)	0.06	0.01	0.26	0.795
T₂ for boys
WHtR	708	−0.65 (−1.77 to 0.46)	0.57	−0.04	−1.15	0.251
BMI Z-score	708	−0.13 (−0.20 to 0.06)	0.03	−0.14	−3.75	<0.001

B₂, Tanner stage 2 for breast development; PH₂, Tanner stage 2 for pubic hair development; T₂, Tanner stage 2 for testicle development with testicular volume ≥4.