Subgroups analysis of chronic tubulointerstitial injuries No. of trials Hazard ratio (95% CI) P-subgroup difference
Sample size >200 3 2.87 (1.64, 5.02) 0.13
<200 4 6.88 (2.59, 18.25)
Follow-up >7 years 4 4.36 (2.59, 7.32) 0.57
< 7 years 3 2.79 (0.65, 11.92)
Endpoint ESRD Renal failure 4 2.47 (1.41, 4.34) 0.05
3 6.91 (2.87, 16.62)
Adjustment Univariate Multivariate 2 4.71 (0.70, 31.81) 0.77
5 1.05 (1.01, 1.09)
Baseline eGFR <80 ml/min per 1.73 m2 >80 ml/min per 1.73 m2 4 4.20 (1.12, 15.68) 0.85
3 3.66 (2.23, 6.01)
Percentage of nephrotic syndrome 100% 2 5.90 (2.23, 15.60) 0.28
<100% 5 2.99 (1.42, 6.29)
Percentage of immunosuppression >80% 4 5.99 (3.29, 10.89) 0.02
<80% 3 2.21 (1.22, 4.00)
Country North American/Europe 3 2.79 (0.65, 11.92) 0.57
Asia 4 4.36 (2.59, 7.32)
Table 3: Subgroup analysis of the association of chronic tubulointerstitial injuries with renal outcomes.