α risk |
191 (93) |
0.05 |
183 (96) |
Two tailed test |
119 (65) |
One tailed test |
7 (4) |
Unspecified |
57 (31) |
0.025 for one tailed test |
2 (1) |
Adapted for interim analyses |
6 (3) |
Power |
200 (98) |
80% |
107 (54) |
85% |
9 (5) |
90% |
66 (33) |
95% |
4 (2) |
Other values |
14 (7) |
Assumptions for control group |
165 (81) |
Justification of assumptions |
81 (49) |
Results from previous trial |
54 (67) |
Preliminary study |
15 (19) |
Observational data |
6 (7) |
Results of systematic review |
2 (3) |
Others |
4 (5) |
Assumptions for the treatment effect |
186 (91) |
Justification of the assumptions |
50 (27) |
Analogy to another trial or treatment |
41 (82) |
Clinical relevance |
7 (14) |
Observational data |
1 (2) |
Results of a meta-analysis |
1 (2) |
All parameters required for sample size calculation |
113 (53) |