Table 2 Multivariate logistic regression model for bedtime and baseline myopia.
From: Sleeping late is a risk factor for myopia development amongst school-aged children in China
Variable | Adjusted OR (95% CI) | Test statistic, p |
|---|---|---|
Area: sub-urban | 1 (Reference) | |
Urban | 1.44 (1.12, 1.84) | z = 2.85, p = 0.004 |
Age (years): 6 years | 1 (Reference) | |
7 years | 3.02 (2.21, 4.14) | z = 6.91, p < 0.001 |
8 years | 4.08 (2.89, 5.75) | z = 8.00, p < 0.001 |
Gender: Male | 1 (Reference) | |
Female | 0.77 (0.62, 0.95) | z = − 2.42, p = 0.02 |
Usual bedtime: Before 9 p.m. | 1 (Reference) | |
9 to 9:29 p.m. | 1.38 (0.99, 1.94) | z = 1.88, p = 0.06 |
9:30 p.m. and after | 1.55 (1.02, 2.34) | z = 2.06, p = 0.04 |
Sleep duration (h): < 9.5 h | 1 (Reference) | |
9.5 to 10 h | 1.07 (0.83, 1.39) | z = 0.53, p = 0.60 |
10 h and more | 1.23 (0.88, 1.72) | z = 1.22, p = 0.22 |
Outdoor weekly total (per h) | 0.96 (0.93, 0.98) | z = − 3.13, p = 0.002 |
