Table 1 Evaluation criteria
From: Multimorbidity and quality of life in primary care: a systematic review
Evaluation criteria for the studies identified in the literature search: 0, 1, or 2 points per criterion or subcriterion (maximum score = 20) |
|---|
Criterion1: Originality |
   Original study (cross-sectional or longitudinal) with a clear objective |
Criterion 2: Population studied |
   2a) Primary care or general population |
   2b) Well-defined control group or good variability of the independent variable in a regression model |
   2c) Characteristics of the groups are described, including those of nonrespondents, and do not lead to bias |
Criterion 3: Definition |
   Clear definition of multimorbidity and valid measure |
Criterion 4: Outcome |
   4a) Quality of life was the primary outcome measure |
   4b) Quality of life was evaluated with a validated scale |
   4c) Evaluation of quality of life was independent of the multimorbidity/comorbidity score (i.e., blind evaluation) |
   4d) Effects of the main confounding factors (e.g., age, gender) are presented and discussed |
Criterion 5: Limitations |
   Authors comprehensively discussed the limitations of their study |