Skip to main content

Table 2 Associations of chronotype score (MEQa) with social jet lag, sleep duration, meal timing, physical activity and body mass index (BMI)b

From: Chronotype is associated with eating behaviors, physical activity and overweight in school-aged children

Characteristics

βc

95% CId

P valuee

Body mass index(kg/m2)

-0.056

-0.085, -0.028

< 0.0001

Meal timing

   

Breakfast time weekdays (h:min)

-0.004

-0.007, -0.002

0.001

Breakfast time weekends (h:min)

-0.026

-0.032, -0.021

< 0.0001

Lunch time weekdays (h:min)

-0.007

-0.010, -0.004

< 0.0001

Lunch time weekends (h:min)

-0.013

-0.017, -0.009

< 0.0001

Dinner time weekdays (h:min)

-0.009

-0.013, -0.004

< 0.0001

Dinner time weekends (h:min)

-0.009

-0.014, -0.004

< 0.0001

Weekdays Eating midpoint (h:min)

-0.016

-0.021, -0.011

< 0.0001

Weekends Eating midpoint (h:min)

-0.027

-0.033, -0.021

< 0.0001

Eating jet lag (h)

-0.012

-0.016, -0.008

< 0.0001

Physical activity

   

Light physical activity 60 min a day (days/week)

0.041

0.022, 0.060

< 0.0001

Moderate physical activity 60 min a day (days/week)

0.040

0.023, 0.057

< 0.0001

Muscle strengthening activity 60 min a day (days/week)

0.049

0.029, 0.068

< 0.0001

Average sleep duration (h/night)

0.014

0.009, 0.018

< 0.0001

Sleep duration in weekdays (h/night)

0.013

0.008, 0.017

< 0.0001

Sleep duration in weekends (h/night)

0.017

0.012, 0.023

< 0.0001

Social jet lag (h)

-0.007

-0.010, -0.004

< 0.0001

  1. a MEQ, Morning-Evening Questionnaire
  2. Data are presented as unstandardized beta coefficients (standard error)
  3. Chronotype score was expressed as a continuous variable ranging from 16 to 86, higher score indicates a preference for morningness. CI, confidence interval
  4. b Models adjust for children age, sex, parental marital status and parental education level on college
  5. c β: standardized regression
  6. d c: confidence interval
  7. eP value from the multiple linear regression model
  8. Bold: P values<0.05