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Table 4 Summary of data collection and timeline

From: Chronotype, chrononutrition and glucose tolerance among prediabetic individuals: research protocol for a prospective longitudinal study Chrono-DM™

Data

Baseline

3 months

6 months

Sociodemographic

 Age

·

  

 Sex

·

  

 Date of birth

·

  

 Education level

·

  

 Occupation

·

  

 Monthly household income

·

  

 Health history

·

  

 Alcohol habit

   

 Smoking habit

·

  

 Supplementary consumption

·

  

 Known sleep disorder

·

  

 Pregnant or lactating

·

  

Anthropometry

 Weight

·

·

·

 Height

·

·

·

 Waist circumference

·

·

·

 Visceral fat

·

·

·

 Body fat

·

·

·

 Step counts

 

·

 

Questionnaires

 Munich chronotype (MCTQ)

·

·

·

 Pittsburgh sleep quality index (PSQI)

·

·

·

 Harvard light exposure (HLEQ)

·

·

·

 International physical activity IPAQ)

·

·

·

 Malay translated chrononutrition profile (CPQ-M)

·

·

·

 3 days dietary record (3DDR)

·

·

·

Glycemic Measurements

 Continuous glucose monitoring (CGM)

 

·

 

 Fasting blood sugar (FBS)

·

·

·

 2-h post-load plasma glucose (2hPPG)

·

 

·

 Glycated hemoglobin (HbA1c)

·

·

·