Table 1 Characteristics of studies included in quantitative synthesis
From: Cognition in chronic kidney disease: a systematic review and meta-analysis
Characteristic | Meta-analysis comparison eGFR cut point in mL/min/1.73Â m2, studies (participants) | ||||
|---|---|---|---|---|---|
< 15 | < 30 | < 45 | < 60 | Overall | |
Total | 6 (5482) | 13 (18,041) | 16 (37,259) | 43 (51,418) | 44 (51,575) |
Region | |||||
Americas | 3 (5327) | 5 (8356) | 8 (17,921) | 21 (27,976) | 22 (28,133) |
Asia & Pacific | 1 (60) | 4 (1728) | 4 (5787) | 11 (9246) | 11 (9246) |
Europe & Russia | 2 (95) | 3 (7887) | 4 (13,551) | 8 (13,848) | 8 (13,848) |
Africa | – | 1 (70) | – | 3 (348) | 3 (348) |
Study design | |||||
Cross-sectional | 6 (5482) | 8 (6434) | 9 (17,486) | 33 (26,915) | 33 (27,072) |
Cohort | – | 5 (11,607) | 7 (19,773) | 10 (24,503) | 10 (24,503) |
Participantsa | |||||
Mean age (Range), years |  |  |  |  | 67.1 (18–89) |
Women | Â | Â | Â | Â | 52.2% |
Basis of between-groups comparisons | |||||
eGFR/proteinuria | 3 | 11 | 14 | 31 | 32 |
CKD vs. Healthy | 4 | 4 | 2 | 17 | 17 |
Within-CKD | 1 | – | – | – | 1 |
CKD vs. other conditions | 1 | – | – | 1 | 1 |