Table 2.
Sample Characteristics by HOMA Quartiles
| Subject Characteristics | HOMA Quartiles |
||||
|---|---|---|---|---|---|
| Quartile 1 0.341 –1.366 (n=118) |
Quartile 2 1.367 – 1.949 (n=117) |
Quartile 3 1.950 – 2.773 (n=118) |
Quartile 4 2.817 – 20.677(n=118) |
p-value* | |
| Weekday Sleep Duration | 7.63 ± 1.02 | 7.64 ± 1.06 | 7.62 ± 1.00 | 7.63 ± 1.24 | 0.96 |
| Age | 16.4 ± 1.9 | 16.1 ± 2.1 | 15.2 ± 2.1 | 15.0 ± 2.0 | <0.001 |
| Male Sex | 65 (55.1%) | 49 (41.9%) | 59 (50.0%) | 59 (50.0%) | 0.37 |
| Minority Race | 35 (29.7%) | 41 (35.0%) | 57 (48.3%) | 68 (57.6%) | <0.001 |
| Preterm Status | 49 (41.5%) | 58 (49.6%) | 58 (49.2%) | 67 (56.8%) | 0.22 |
| Moderate/vigorous daily activity | |||||
| < 30 min | 40 (33.9%) | 49 (41.9%) | 57 (48.3%) | 77 (65.2%) | <0.001 |
| 30–59 min | 20 (16.9%) | 22 (18.8%) | 25 (21.2%) | 14 (11.9%) | |
| 60 min | 58 (49.2%) | 46 (39.3%) | 36 (30.5%) | 27 (22.9%) | |
| Extended weekend sleep duration | 15 (12.7%) | 20 (17.1%) | 16 (13.6%) | 19 (16.1%) | 0.82 |
| Adiposity | |||||
| Waist Circumference (cm) | 70.0 ± 7.4 | 70.3 ± 7.5 | 74.6 ± 11.1 | 84.1 ± 13.7 | <0.001 |
| Obese (BMI ≥ 30 or BMI ≥ 95th) | 1 (0.9%) | 6 (5.1%) | 22 (18.6%) | 59 (50.0%) | <0.001 |
| BMI Percentile | 51.6 (31.3, 68.7) | 58.5 (39.8, 80.9) | 71.3 (47.1, 90.9) | 95.0 (85.3, 98.2) | <0.001 |
N=471 observations on n=387 people; N (column %) shown for categorical variables; median (IQR) or mean ± SD presented for continuous variables
*
Quadratic trend test for mean weekday sleep duration, BMI percentile and waist circumference; linear trend test shown for age; omnibus test of any group difference shown for categorical variables.