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Table 1

From: Methodological quality of studies of end-stage renal disease risks in lupus nephritis

Quality measure Observational studies (n= 132) Clinical trials (n= 42)
1. ACR criteria for SLE used 88.3 88.1
2. Measure of renal function included 77.2 95.2
3. Treatments described 84.1 100
4. Community-based study 11.3 Not applicable
5. Inception cohort 40.1 11.9
6. Renal biopsy not required for inclusion 37.1 35.7
7. Patients with chronic kidney disease not excluded 80.3 23.8
8. Losses to follow-up described 24.2 42.8
9. Losses to follow-up < 20% 18.9 30.9
10. Data reported using Kaplan-Meier curves 36.3 9.5