. Author manuscript; available in PMC: 2016 Sep 1.

Published in final edited form as: Obesity (Silver Spring). 2015 Sep;23(9):1872–1880. doi: 10.1002/oby.21162

Table 1.

Anthropometric characteristics (by 2 year intervals) of the 6 BMI z-score trajectory groups

BMI z- score Group	Number	Posterior Probability	Males (%)	Number of Visits	Birth Weight (g)^a ^c (n=704)	Average BMI (kg/m²) [Number Represented]								Early Adult BMI (kg/m²)^a ^d ^e	Height (cm)^a ^b
BMI z- score Group	Number	Posterior Probability	Males (%)	Number of Visits	Birth Weight (g)^a ^c (n=704)	Age 2 to 4 (years)^c	Age 4 to 6 (years) ^c	Age 6 to 8 (years)^d	Age 8 to 10 (years)^d	Age 10 to 12 (years)^d	Age 12 to 14 (years)^d	Age 14 to 16 (years)^d	Age 16 to 18 (years)^d	Early Adult BMI (kg/m²)^a ^d ^e	Height (cm)^a ^b
Below Average	73	0.92	56	4.3±0.6	3047±455	14.4±0. 9^$ [13]	13.8±0. 6^$ [21]	13.9±0. 6 [35]	14.5±0. 7[50]	15.3±1. 1 [54]	16.6±1. 1[43]	18.1±1. 8[48]	19.5±2. 2[37]	23.2±4.6 (20.9, 25.6)	169±7^# (166, 171)
Average	289	0.88	49	4.4±0.6	3285±472^$	15.7±0. 8^$ [39]	15.2±0. 7^# [86]	15.2±0. 8 [166]	15.8±1. 2[215]	16.9±1. 3[214]	18.5±1. 5[208]	20.2±1. 8[175]	22.1±2. 5 [142]	26.2±4.3 (24.6, 27.9)	166±8^$ (164, 167)
Stable Above Average	418	0.86	40^b	4.5±0.7	3432±436^#	17.2±1. 3^# [50]	16.1±1. 0^# [120]	16.2±1. 0 [243]	17.4±1. 3[294]	19.4±1. 7[310]	21.7±2. 4 [320]	23.6±2. 5 [247]	25.2±2. 8[233]	29.8±5.4 (28.2, 31.4)	167±8^$ (165, 169)
Lean Increasing to Overweight	446	0.85	43^b	4.5±0.7	3365±491^$	15.3±0. 8^$ [87]	15.6±0. 9^# [168]	17.4±1. 6[253]	20.1±2. 4[285]	23.3±2. 4[331]	26.0±2. 9 [308]	28.0±3. 4 [262]	30.0±3. 9 [220]	34.9±6.2 (33.3, 36.6)	168±9^# (166, 170)
High Increasing	514	0.84	43^b	4.5±0.8	3469±471^#	17.2±1. 0^# [171]	17.7±1. 6 [223]	20.5±2. 3[269]	24.2±2. 9[336]	27.8±3. 1 [366]	31.2±3. 9 [333]	33.7±3. 9 [249]	35.4±4. 5 [211]	39.4±6.6 (37.7, 41.1)	170±7^# (168, 172)
Chronic Overweight	180	0.83	53	4.6±0.8	3599±491	20.6±2. 3 [63]	21.9±3. 0 [90]	25.8±3. 4 [109]	30.0±3. 6 121]	34.3±4. 4[117]	37.9±5. 5 [115]	39.9±5. 8[97]	42.0±7. 0 [62]	44.3±7.7 (42.0, 46.6)	171±10 ^# (169, 174)
Total	1920	0.86	45	4.5±0.7	3419±503	[423]	[708]	[1075]	[1301]	[1392]	[1327]	[1078]	[905]	32.8±7.9	165±8

BMI data presented as mean±SD;

mean±SD (95% confidence interval) adjusted for age (birth weight is adjusted for gestational age), sex, degree of Pima heritage, Birth year;

p<0.01 for frequency different from 50%;

Symbols indicate values that are similar to one another (p>0.05 for the difference);

p<0.05 between all comparisons;

Early Adult BMI occurred at an average age of 23.7±4.2