Table 2.
Comparison of efficacy endpoints.
Clinical endpoints | ABW, n (%) | AdjBW, n (%) | Risk difference (90% confidence interval) | Two one-sided tests p values | ||
---|---|---|---|---|---|---|
Lower margin | Upper margin | Conclusion | ||||
Clinical failurea | 1 (2.0) | 3 (6.1) | 3.9 (– 2.4 to 10.6) | <0.0001 | <0.0001 | Equivalent |
Developed resistance | 1 (2.0) | 2 (3.9) | 1.9 (–3.6 to 7.5) | <0.0001 | <0.0001 | Equivalent |
Antibiotic therapy modification | 0 (0) | 2(4) | 4.0 (0.6 to 8.6) | <0.0001 | <0.0001 | Equivalent |
90-day mortality | 3 (6.0) | 2 (3.9) | −2.1 (–9.2 to 5.0) | 0.0014 | <0.0001 | Equivalent |
90-day readmission | 10 (20.0) | 5 (9.8) | −10.2 (–21.8 to 1.4) | 0.2470 | 0.0002 | Not equivalent |
ABW: actual body weight; AdjBW: adjusted body weight.
A total of four patients met criteria for clinical failure; one patient met criteria based on both components of the definition; that is, antibiotic therapy was modified due to clinical signs and symptoms and subsequent cultures indicated development of antimicrobial resistance to daptomycin.
Combined developed resistance and antibiotic therapy modification.