Table 2.

Median (IQR) or Mean ± SD values of HOMA-IR, insulin, and glucose, according to categories of covariates in a sample of 384 Mexican youth

	Sample size	Median HOMA-IR (IQR)	Median Insulin (IQR)	Mean Glucose ±SD
Age (years), Quartiles
Q1, 9.9 to <12.2	96	3.23 (2.18, 4.84)	16.55 (11.65, 24.30)	78.32 ± 6.89
Q2, 12.2 to <13.6	96	3.31 (2.17, 5.06)	16.25 (11.20, 24.45)	79.20 ± 6.89
Q3, 13.6 to <15.7	96	3.12 (2.33, 4.33)	16.45 (12.30, 22.50)	77.18 ± 7.51
Q4, 15.7 to 18	96	2.78 (2.06, 4.22)	14.80 (11.10, 21.65)	76.32 ± 7.55
P Value		0.14	0.28	0.02
Sex
Male	188	2.83 (2.03, 4.26)	14.55 (10.80, 21.10)	78.84 ± 7.30
Female	196	3.31 (2.41, 5.13)	17.45 (13.30, 24.55)	76.71 ± 7.11
P Value		0.01	0.002	0.004
Maternal Education, years
8 or less	42	3.03 (2.16, 4.32)	15.95 (12.20, 21.40)	76.93 ± 7.83
9 to 11	152	2.99 (2.22, 4.43)	15.35 (12.00, 22.75)	78.24 ± 7.31
12	134	3.09 (2.15, 4.74)	16.45 (11.60, 23.90)	77.47 ± 7.02
≥12	55	3.22 (2.14, 4.50)	16.30 (11.10, 22.90)	77.75 ± 7.50
P value		0.42	0.40	0.97
Menarche status
No	38	3.26 (2.29, 5.21)	16.55 (12.10, 24.80)	77.37 ± 6.74
Yes	156	3.41 (2.43, 5.13)	18.15 (13.60, 24.55)	76.65 ± 7.17
P Value		0.43	0.34	0.58
Testicular Volume (>15mm)
No	40	2.58 (2.10, 4.06)	13.35 (10.40, 21.00)	77.30 ± 6.43
Yes	142	2.83 (2.03, 4.31)	14.60 (10.80, 21.20)	79.37 ± 7.42
P Value		0.44	0.59	0.11
MVPA, Quartiles (hours/wk)
Q1, 0 to 5.8	89	3.32 (2.42, 4.57)	16.30 (13.30, 23.50)	77.81 ± 6.98
Q2, 6 to 10	107	3.43 (2.37, 5.21)	17.60 (13.00, 27.30)	77.64 ± 6.82
Q3, 10.3 to 14.3	93	2.72 (1.98, 4.36)	14.40 (11.10, 21.10)	77.44 ± 7.62
Q4, 14.5 to 29	95	2.96 (2.06, 4.06)	14.90 (11.00, 22.50)	78.14 ± 7.76
P Value		0.04	0.04	0.81
Ever smoked cigarettes
No	317	3.13 2.39	16.30 (11.70, 23.00)	77.86 ± 7.00
Yes	64	2.79 2.20	14.65 (11.85, 21.25)	77.22 ± 8.65
P Value		0.34	0.39	0.52