Direction of results | ||||||
---|---|---|---|---|---|---|
Condition | No of SRs | + | ± | − | Overall effects | Comments |
Breast cancer | 2 | 0 | 0 | 2 | − | Both SRs are of high quality |
Old age | 3 | 2 | 1 | 0 | + | Positive SR is of poor quality |
Rheumatoid arthritis | 2 | 0 | 0 | 2 | − | Cochrane review is negative |
Improving aerobic capacity | 2 | 1 | 0 | 1 | ± | Positive SR is of poor quality |
Cardiovascular disease and risk factors | 2 | 1 | 0 | 1 | ± | Contradiction exists in interpretation |
Lowering blood pressure | 3 | 2 | 1 | 0 | ± | Positive SRs are of poor quality |
Osteoporosis or bone mineral density | 2 | 0 | 1 | 1 | ± | Positive SR included more trials that originate from China |
Psychological health | 5 | 5 | 1 | 0 | + | Methodological quality is variable |
Fall prevention | 4 | 3 | 1 | 0 | + | All of the included SRs are of high quality |
Improving balance | 2 | 1 | 1 | 0 | + | Newer SR is more positive |
+, positive conclusion; ±, conclusion neither positive nor negative; –, negative conclusion.