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Table 1 Summary of data collection and timeline

From: Circadian rhythm and its association with birth and infant outcomes: research protocol of a prospective cohort study

 

Prenatal

Postnatal

Data

Recruitment

2nd trimester

3rd trimester

Delivery

6 months

12 months

Mothers

 Sociodemographic

•

     

 Date of birth

•

     

 Ethnicity

•

     

 Marital status

•

     

 Educational level

•

     

 Occupation

•

     

 Monthly household income

•

     

 Health history

•

     

 Pre-pregnancy BMI

•

     

 Weight at assessment

 

•

•

   

 DASS-21

 

•

•

   

 3-day food record

 

•

•

   

 Pittsburgh Sleep Quality Index

 

•

•

   

 Social jetlag

 

•

•

   

 Morningness-Eveningness Questionnaire

 

•

•

   

 Salivary sample

 

•

•

   

 Step counts

 

•

•

   

 Neonatal Questionnaire

   

•

  

Infant

 Sex

   

•

  

 Mode of delivery

   

•

  

 Birth weight

   

•

  

 Length at birth

   

•

  

 Head circumference at birth

   

•

  

 Infant feeding practice

    

•

•

 Weight

    

•

•

 Length/height

    

•

•

 Head circumference

    

•

•

 Waist circumference

    

•

•

 Mid-upper arm circumference

    

•

•

 Subscapular skinfold thickness

    

•

•

 Triceps skinfold thickness

    

•

•