Table 3.
Associations between weekday and weekend difference in sleep durations and overweight and obesity among adolescents (age 12–17, N = 1,254).
| Range of weekend–weekday difference in sleep duration, hours | Weekend–weekday difference in sleep duration, quintiles | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| − 6 to 0 | 0.00 to 0.67 | 0.67 to 1.50 | 1.51 to 2.00 | 2.01 to 5.00+ | p for Trend | |||||
| OR 95% CI |
OR 95% CI |
OR 95% CI |
OR 95% CI |
OR 95% CI |
||||||
| Overall | ||||||||||
| Base model | 1.79 | (1.13, 2.83) | Referent | 1.25 | (0.80, 1.95) | 1.40 | (0.86, 2.27) | 1.67 | (1.08, 2.60) | 0.67 |
| Model 2 | 1.81 | (1.13, 2.91) | Referent | 1.26 | (0.80, 1.99) | 1.38 | (0.84, 2.26) | 1.60 | (1.02, 2.51) | 0.89 |
| Model 3 | 2.08 | (1.12, 3.88) | Referent | 1.84 | (1.01, 3.33) | 1.50 | (0.79, 2.84) | 1.59 | (1.18, 3.80) | 0.89 |
| Female | ||||||||||
| Base model | 2.10 | (0.98, 4.50) | Referent | 1.68 | (0.83, 3.38) | 1.58 | (0.74, 3.33) | 2.45 | (1.25, 4.79) | 0.13 |
| Model 2 | 2.15 | (0.97, 4.77) | Referent | 1.74 | (0.84, 3.63) | 1.46 | (0.67, 3.20) | 2.31 | (1.15, 4.63) | 0.26 |
| Model 3 | 2.15 | (0.75, 6.19) | Referent | 1.98 | (0.76, 5.14) | 1.25 | (0.45, 3.47) | 2.59 | (1.04, 6.45) | 0.36 |
| Male | ||||||||||
| Base model | 1.60 | (0.89, 2.89) | Referent | 1.01 | (0.56, 1.80) | 1.37 | (0.72, 2.64) | 1.17 | (0.64, 2.16) | 0.43 |
| Model 2 | 1.56 | (0.85, 2.86) | Referent | 0.99 | (0.54, 1.81) | 1.28 | (0.65, 2.52) | 1.02 | (0.54, 1.92) | 0.24 |
| Model 3 | 1.46 | (0.78, 2.74) | Referent | 1.00 | (0.53, 1.86) | 1.19 | (0.59, 2.40) | 0.93 | (0.48, 1.79) | 0.20 |
Weekday consists of sunday to thursday evenings. Weekend consists of friday and saturday evenings.
Base model adjusted for sex (for overall analysis alone) and age.
Model 2: adjusted for covariates in base model and race, school type, parental marital status, home ownership, parental education.
Model 3: adjusted for covariates in model 2 and moderate-vigorous physical activity (MVPA), teen sedentary time, teen frequency of beneficial foods eaten, teen frequency of detrimental foods eaten, and time spent watching television.
Negative weekend–weekday difference in duration values (< 0) represent longer sleep on the weekdays compared to weekends.
Positive weekend–weekday difference induration values (> 0) represent longer sleep on the weekend compared to weekdays.
p-for-interaction between sex and weekday–weekend difference in sleep duration: 0.07.
OR Odds ratio, 95% CI 95% confidence interval.