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Table 1 Overview of data collection measurements per test occasion (i.e., T0 to T2)

From: The impact of non-residential grandchild care on physical activity and sedentary behavior in people aged 50 years and over: study protocol of the Healthy Grandparenting Project

Outcome measure Type of measurement Instrument Data collection approach
Socio-demographic characteristicsa Self-report Questionnaire, Part 1 A
Intensity of grandchild careb Self-report Questionnaire, Part 2 A
Physical activityc Self-report Interview, Part 1: IPAQ in Dutch C
Accelerometer Actigraph wGT3X-BT B
Activity diary SEMA3: Ecological Momentary Assessment or 7-day log sheet A
Sedentary behaviorc Self-report Interview, Part 2: Sedentary behavior questionnaire for (older) adults in Dutch C
Accelerometer Actigraph wGT3X-BT B
Sedentary diary SEMA3: Ecological Momentary Assessment or 7-day log sheet A
Health-related quality of life Self-report Questionnaire, Part 3: SF-36v2 in Dutch A
Anthropometrics and body composition Height SECA 213 mobile stadiometer D
Weight TANITA MC-780MA S D
Waist and hip circumference Cescorf measuring tape D
Bio-electrical Impedance Analysis TANITA MC-780MA S D
  1. A = User information provided during the home visit + Postal or online return of the questionnaire and/or log sheet
  2. B = User information provided during the home visit + Postal return of the device
  3. C = Information obtained by telephone interview at the end of the week
  4. D = On-site measurement during the home visit at the start of the week
  5. aAll questions with regard to the demographics of grandchildren will be omitted in the non-grandparent version
  6. bThis part of the questionnaire will only be included for participants with one or more grandchildren aged between 0 and 5 years at the moment of testing
  7. cAll physical activity and sedentary behavior outcome measures will cover the same one-week period, consisting of 5 weekdays and 2 weekend days. The objective measurements require a prospective approach, whereas the self-report measurements are retrospectively questioning the same past week per test occasion