Table 4.

Cox regression model of factors associated with frequently relapsing nephrotic syndrome at 2 years after initial therapy (n=138)

FactorUnadjustedAdjusted
HR95% CIPHR95% CIP
Male (versus female)1.320.63–3.020.471.410.64–3.340.40
Onset age (<5 to ≥5 yr)2.691.31–5.940.0071.500.71–3.390.29
Serum sodium (<135 to ≥135 mEq/L)2.541.15–5.220.021.340.59–2.830.47
Time from start of initial treatment to disappearance of proteinuria (≥9 to <9 d)6.653.17–15.19<0.0013.091.42–7.270.004
Time from start of initial treatment to first relapse (<6 to ≥6 mo)8.66×10629.46–N/A<0.0015.09×10616.56–2.06×10184<0.001
  • HR, hazard ratio; CI, confidence interval; N/A, not available.