Table 1 Health measures and definition

Mental Health (score 0–100)

Been a nervous person? (1–6; 1: all of the time − 6 none of the time)

Felt so down in the dumps nothing could cheer you up (1–6)?

Felt downhearted and blue (1–6)?

Felt calm and peaceful (1–6)?

Been a happy person (1–6)?

Physical functioning (score 0–100)

Vigorous activities (1–3: 1 limited a lot, 2 limited a little, 3 not limited at all)

Moderate activities (1–3)

Lifting or carrying groceries (1–3)

Climbing several flights of stairs (1–3)

Climbing one flight of stairs (1–3)

Bending kneeling or stooping (1–3)

Walking more than one kilometer (1–3)

Walking half a kilometer (1–3)

Walking 100 m (1–3)

Bathing or dressing yourself (1–3)

General Health (score 0–100)

Self-assessed health (from 1-excellent to 5-poor)

Get sick a little easier than other people (1-definitely true to 5-definitely false)

As healthy as anybody I know (1–5)

Expect my health to get worse (1–5)

My health is excellent (1–5)