The 30-day all-cause readmission rate after the first hospitalization for HF was 23.6 % ( 29 of 123 ) in placebo versus 14.8 % ( 12 of 81 ) in the FDC-I/H group , but the effect ( 0.59 ; 0.30-1 .16 ; P = 0.12 ) in this small subgroup was not significant .