Table 4. Association between short sleep duration and obesity adjusted by each confounder at a time.

Model	PR (95% CI)
	Overall
Crude	1.64 (1.16–2.33)
Child-related variables
Adjusted by child age*	1.64 (1.16–2.32)
Adjusted by child gender	1.65 (1.16–2.34)
Adjusted by birth weight	1.59 (1.34–2.23)
Adjusted by number of meals	1.56 (1.11–2.20)
Adjusted by physical activity	1.59 (1.09–2.31)
Family-related variables
Adjusted by maternal education	1.35 (0.94–1.92)
Adjusted by paternal education	1.45 (1.00–2.11)
Adjusted by maternal weight	1.40 (1.06–1.86)
Adjusted by location	1.47 (1.06–2.06)
Adjusted by wealth index	1.29 (0.92–1.81)

Peruvian younger cohort.

*Adjusted only by child age.

Results in bold are statistical significant. PR: prevalence ratio. 95%CI: 95% confidence interval.