Table 3.

Association of diet quality in childhood with puberty timing^a

	Diet quality according to CCDI score			ptrend c
	Lower (56.2–82.3)b	Moderate (82.9–105.6)b	Higher (106.2–136.3)b
Girls
Age at Tanner stage B2 (n = 1752)
Unadjusted model:	1	0.90 (0.81, 0.97)	0.86 (0.79, 0.93)	0.04
Model 2d:	1	0.88 (0.78, 0.96)	0.85 (0.80, 0.92)	0.02
Final modele:	1	0.88 (0.79, 0.98)	0.85 (0.81, 0.94)	0.02
Age at menarche (n = 1752)
Unadjusted model:	1	0.91 (0.83, 0.98)	0.88 (0.81, 0.94)	0.03
Model 2d:	1	0.89 (0.81, 0.97)	0.87 (0.79, 0.95)	0.02
Final modele:	1	0.89 (0.80, 0.97)	0.86 (0.80, 0.95)	0.02

	Lower (46.1–77.5)f	Moderate (78.2–101.7)f	Higher (102.3–131.5)f	ptrend c
Boys
Age at Tanner stage G2 (n = 2231)
Unadjusted model:	1	0.92 (0.84, 1.02)	0.87 (0.78, 0.95)	0.03
Model 2d:	1	0.90 (0.82, 0.98)	0.86 (0.79, 0.96)	0.02
Final modele:	1	0.89 (0.82, 0.97)	0.86 (0.80, 0.96)	0.02
Age at voice break (n = 2231)
Unadjusted model:	1	0.93 (0.86, 1.05)	0.85 (0.74, 1.04)	0.05
Model 2d:	1	0.91 (0.85, 1.01)	0.86 (0.76, 0.97)	0.04
Final modele:	1	0.90 (0.83, 0.98)	0.86 (0.79, 0.98)	0.03

^aValues are models adjusted hazard ratios (95% CI), HR = hazard ratio; diet quality was assessed according to CCDI (Chinese Children Dietary Index) based on diet data at baseline

^bValues are min–max in tertiles in girls

^cP for trend across CCDI tertiles were performed by including CCDI ordinals as continuous variables

^dAdjusted for paternal education level and energy intake at baseline

^eAdditionally adjusted for percent body fat at baseline

^fValues are min–max in tertiles in boys