At follow-up , per strut-level analysis , percentage of incompletely apposed struts was 0.42 0.94 vs. 0.38 0.77 % ( P = 0.76 ) , and percentage of covered struts was 92.7 7.2 vs. 94.4 9.2 % ( P = 0.47 ) in the TB and non-TB groups , respectively .