Childhood body mass index trajectories: modeling, characterizing, pairwise correlations and socio-demographic predictors of trajectory characteristics

Table 4 Correlation matrix of childhood BMI trajectory characteristics (N = 3,289)

		1 week to infancy peak					Infancy peak to adiposity rebound						Adiposity rebound to age 18 years
Parameters		1	2	3	4	5	6	7	8	9	10	11	12	13
1 week to infancy peak
1	Age at infancy peak, months
2	BMI at infancy peak, kg/m²	0.39
3	Change in BMI, kg/m²	-0.03	0.45
4	Velocity, kg/m²/month	-0.25	0.34	0.96
5	Area under curve (kg/m²-months)	0.96	0.63	0.07	-0.14
Infancy peak to adiposity rebound
6	Age at adiposity rebound, months	-0.09	0.15	0.12	0.11	-0.08
7	BMI at adiposity rebound, kg/m²	0.59	0.76	0.26	0.13	0.76	-0.48
8	Age difference, months	-0.17	0.12	0.13	0.13	-0.16	0.99	-0.53
9	Change in BMI, kg/m²	0.46	0.01	-0.13	-0.20	0.42	-0.91	0.66	-0.94
10	Velocity, kg/m²/month	0.84	0.23	-0.10	-0.27	0.79	-0.54	0.71	-0.61	0.82
11	Area under curve (kg/m²-months)	-0.06	0.33	0.21	0.19	0.01	0.98	-0.32	0.97	-0.87	-0.51
Adiposity rebound to age 18 years
12	Change in BMI, kg/m²	-0.10	-0.18	-0.07	-0.01	-0.09	-0.94	0.38	-0.93	0.79	0.38	-0.93
13	Velocity, kg/m²/month	-0.08	-0.18	-0.07	-0.02	-0.07	-0.95	0.39	-0.93	0.80	0.40	-0.93	0.99
14	Area under curve (kg/m²-months)	0.22	0.16	0.03	0.00	0.28	-0.94	0.71	-0.95	0.91	0.64	-0.87	0.91	0.92