Table 3

Results of Appropriate ICD Therapies According to Intention-to-Treat Analysis

No. of Therapies (# of Treated Patients)Rate per 100 Patient-YearsIRR (95% CI)p Value
OverallStandard interval179 (48)74 (63–85)1.000.001
Long detection73 (23)30 (23–38)0.45 (0.28–0.71)
ATPStandard interval105 (45)43 (35–52)1.000.001
Long detection39 (21)16 (11–22)0.43 (0.27–0.71)
ShockStandard interval74 (30)30 (24–38)1.000.033
Long detection34 (15)14 (10–19)0.49 (0.26–0.94)

Abbreviations as in Table 2.