Predictors of a 30% decline in eGFR.

HR, hazard ratio; CI, confidence interval. Data are the HR, 95% CI, and P value from Cox proportional hazard regression analyses. “Never smoked” was used as the reference category. Adjusted for baseline characteristics (age, sex, systolic/diastolic pressure, serum creatinine level, urinary protein, use of ACE inhibitor or ARB within 6 months after kidney biopsy, and immunosuppressive therapy within 6 months after kidney biopsy). Abbreviations: IMN, idiopathic membranous nephropathy; ACE, angiotensin-converting enzyme; ARB, angiotensin receptor blocker.