| | | | |
Counter-matching
|
|---|
| | |
Random sampling
|
CM 1:2
|
CM 2:1
|
|---|
|
2 Gy rate ratio
|
Alla
|
NCC 3
|
NCC 4
|
PN = 100%, PP = 100%
|
PN = 90%, PP = 90%
|
PN = 100%, PP = 100%
|
|---|
|
1.4
|
79
|
61
|
63
|
70
|
67
|
63
|
|
1.5
|
87
|
69
|
78
|
84
|
80
|
78
|
|
1.6
|
97
|
86
|
93
|
95
|
92
|
92
|
|
1.7
|
100
|
95
|
97
|
99
|
96
|
97
|
- CM 1:2, counter-matched design in which one member of the triplet is registry radiation treatment negative (RRT-) and two are registry radiation treatment positive (RRT+); CM 2:1, counter-matched design in which two members of the triplet are RRT- and one is RRT+; NCC 3, nested case-control study in which each case is randomly matched to two controls; NCC 4, nested case-control study in which each case is randomly matched to three controls; PN, predictive negative value; PP, predictive positive value. aFull cohort power where radiation dose is available for all controls in the risk set and used in the analysis; this is the upper limit on any case-control analysis.
