Table 2

Outputs, values, units and description of the Diet History Questionnaire II, the International Physical Activity Questionnaire, the Perceived Stress Scale and the Pittsburgh Sleep Quality Index

QuestionnaireOutputsValuesUnitDescription
Eating habits:
Diet History Questionnaire II past year, with portion size		176 nutrients, dietary constituents and food groupsVariedVaried:

  • µg

  • mg

  • g

  • kcal

  • IU, etc

Food groups:

  • Carbohydrate constituents

  • Macronutrients and energy

  • Fats, fatty acids and cholesterol

  • Protein constituents

  • Vitamins

  • Minerals

  • Carotenoids and tocopherols

  • Dietary constituents from supplements

  • Other

  • Food pyramid equivalents

HEI (Healthy Eating Index-2010)0–100PointGood: 80–100
Needs improvement: 51–80
Poor: 0–51
Physical activity:
International Physical Activity Questionnaire long, last year version		Total walking activity0–MET-minutes/week
OR kcal/week
Total moderate activity0–MET-minutes/week
OR kcal/week
Total vigorous activity0–MET-minutes/week
OR kcal/week
Total physical activity0–MET-minutes/week
OR kcal/week
Sedentary activity0-Hour and min/day
Level of physical activityLow
Moderate
High		NADetailed description in the text above
Stress:
Percieved Stress Scale (PSS)
10-item version		Total general PSS score0–40PointLow perceived stress: 0–13
Moderate perceived stress: 14–26
High perceived stress: 27–40
Sleep:
Pittsburgh Sleep Quality Index (PSQI)		Component 1: Subjective sleep quality0–3Point0-good, 3-bad
Component 2: Sleep latency0–3Point0-good, 3-bad
Component 3: Sleep duration0–3Point0-good, 3-bad
Component 4: Habitual sleep efficiency0–3Point0-good, 3-bad
Component 5: Sleep disturbances0–3Point0-good, 3-bad
Component 6: Use of sleeping medication0–3Point0-good, 3-bad
Component 7: Daytime dysfunction0–3Point0-good, 3-bad
Global PSQI score (general)0–21PointGood sleep quality: 0–5
Poor sleep quality: 5–21

  • MET, metabolic equivalent of task; NA, not applicable.