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Table 1 The nine longitudinal studies

From: What is the relationship between the minimally important difference and health state utility values? The case of the SF-6D

Study/patient group

Total study size

Number who reported some change

Period of time

Older adults (aged >65 years): 1st follow-up

4945

1362

Baseline to year 1

Older adults (aged >65 years): 2nd follow-up

3127

948

Year 1 to year 2

Irritable bowel syndrome (IBS) patients

137

56

Baseline to 3 months

Irritable bowel syndrome (IBS) control patients

177

27

Baseline to 3 months

Leg ulcer patients

194

45

Baseline to 3 months

Knee Osteoarthritis (OA) patients

157

59

Baseline to 6 months

Limb reconstruction patients

60

29

Baseline to year 1

Early Rheumatoid Arthritis (RA) patients

246

99

Baseline to year 1

Patients with Chronic Obstructive Pulmonary Disease (COPD)

60

29

Baseline to year 1

  1. Total study size = no. of patients with valid baseline and follow-up SF-6D score and follow-up global change score.