Table 2.
Association of Sleep Curtailment Score with the Metabolic Risk Score and Components (n = 652)†
| Sleep Curtailment Score | 0 to 4 5.1% |
5 to 7 13.9% |
8 to 9 14.1% |
10 to 11 28.7% |
12 to 13 38.30% |
Continuous Score |
|---|---|---|---|---|---|---|
|
|
||||||
| Metabolic Risk Score |
Mean Difference (95% Confidence Interval)
|
|||||
| Model 1. Child age & sex | 0.28 (0.01, 0.54) | 0.12 (−0.04, 0.27) | 0.11 (−0.05, 0.27) | 0.05 (−0.07, 0.17) | 0.0 (ref) | −0.03 (−0.04, −0.01) |
| Model 2. Model 1 + SES | 0.29 (0.02, 0.57) | 0.16 (0.00, 0.33) | 0.12 (−0.05, 0.28) | 0.05 (−0.07, 0.17) | 0.0 (ref) | −0.03 (−0.05, −0.01) |
| Model 3. Model 2 + BMI | 0.08 (−0.14, 0.30) | 0.05 (−0.09, 0.18) | 0.03 (−0.10, 0.16) | 0.01 (−0.08, 0.11) | 0.0 (ref) | −0.01 (−0.03, 0.01) |
| Components | ||||||
| Waist circumference, cm | ||||||
| Model 1. Child age & sex | 5.56 (2.04, 9.08) | 2.74 (0.55, 4.93) | 1.98 (−0.26, 4.23) | 1.34 (−0.31, 2.98) | 0.0 (ref) | −0.51 (−0.74, −0.27) |
| Model 2. Model 1 + SES | 4.76 (1.18, 8.34) | 2.7 (0.46, 4.94) | 1.34 (−0.84, 3.52) | 1.07 (−0.51, 2.64) | 0.0 (ref) | −0.46 (−0.72, −0.20) |
| Model 3. Model 2 + BMI | 0.86 (−1.25, 2.98) | 0.6 (−0.74, 1.94) | −0.17 (−1.47, 1.13) | 0.42 (−0.52, 1.35) | 0.0 (ref) | −0.06 (−0.22, 0.09) |
| Systolic blood pressure, mm/Hg | ||||||
| Model 1. Child age & sex | 1.07 (−2.81, 4.94) | 0.74 (−1.65, 3.12) | 1.15 (−1.17, 3.47) | −0.75 (−1.93, 0.43) | 0.0 (ref) | −0.14 (−0.40, 0.12) |
| Model 2. Model 1 + SES | 1.22 (−2.75, 5.19) | 0.98 (−1.53, 3.48) | 0.70 (−1.67, 3.08) | 0.29 (−1.48, 2.06) | 0.0 (ref) | −0.16 (−0.45, 0.12) |
| Model 3. Model 2 + BMI | −0.85 (−4.51, 2.81) | −0.14 (−2.51, 2.23) | −0.10 (−2.28, 2.08) | −0.06 (−1.68, 1.56) | 0.0 (ref) | 0.05 (−0.22, 0.32) |
| Triglycerides, mg/dL | ||||||
| Model 1. Child age & sex | 2.36 (−8.10, 12.82) | −1.91 (−8.83, 5.02) | −1.77 (−8.36, 4.82) | 0.62 (−4.66, 5.89) | 0.0 (ref) | −0.01 (−0.78, 0.75) |
| Model 2. Model 1 + SES | 6.78 (−4.40, 17.95) | 2.25 (−5.08, 9.59) | 1.50 (−5.39, 8.39) | 1.72 (−3.59, 7.02) | 0.0 (ref) | −0.64 (−1.51, 0.23) |
| Model 3. Model 2 + BMI | 3.54 (−7.42, 14.49) | 0.50 (−6.64, 7.63) | 0.24 (−6.58, 7.06) | 1.18 (−4.07, 6.42) | 0.0 (ref) | −0.31 (−1.17, 0.55) |
| HDL cholesterol, mg/dL | ||||||
| Model 1. Child age & sex | −2.16 (−7.95, 3.64) | 0.41 (−3.23, 4.06) | −0.32 (−3.97, 3.34) | 0.58 (−2.18, 3.35) | 0.0 (ref) | 0.12 (−0.31, 0.55) |
| Model 2. Model 1 + SES | −3.38 (−9.64, 2.87) | −0.81 (−4.74, 3.11) | −1.21 (−5.02, 2.61) | 0.16 (−2.65, 2.96) | 0.0 (ref) | 0.30 (−0.19, 0.78) |
| Model 3. Model 2 + BMI | −1.84 (−8.16, 4.48) | 0.02 (−3.85, 3.88) | −0.61 (−4.37, 3.15) | 0.41 (−2.35, 3.17) | 0.0 (ref) | 0.14 (−0.35, 0.63) |
| HOMA-IR | ||||||
| Model 1. Child age & sex | 0.83 (0.17, 1.50) | 0.49 (0.07, 0.91) | 0.40 (−0.02, 0.81) | 0.26 (−0.06, 0.58) | 0.0 (ref) | −0.09 (−0.13, −0.04) |
| Model 2. Model 1 + SES | 0.47 (−0.23, 1.18) | 0.31 (−0.15, 0.77) | 0.22 (−0.20, 0.65) | 0.19 (−0.12, 0.51) | 0.0 (ref) | −0.06 (−0.11, −0.002) |
| Model 3. Model 2 + BMI | 0.17 (−0.49, 0.83) | 0.15 (−0.29, 0.59) | 0.11 (−0.30, 0.51) | 0.14 (−0.15, 0.44) | 0.0 (ref) | −0.02 (−0.08, 0.03) |
1
All analyses use linear regression. Model 1 is adjusted only for child age and sex. Model 2 is additionally adjusted for maternal education, pre-pregnancy BMI, age at enrollment and nullparity; household income; and child race/ethnicity. Model 3 is further adjusted for child BMI z-score at mid-childhood.
†
The range of the total sleep score is 0–13, where 0 indicates the maximal sleep curtailment and 13 indicates never having curtailed sleep.