Table 3 Differences in mean effect on treated patients in terms of survival years according to the matching algorithm
Matching method | Difference RRT years | 95% CI Bootstrap | B* | Treated RRT | Controls no RRT | Mortality HR (95% CI) | Difference 5-year mortality % |
|---|---|---|---|---|---|---|---|
Nearest neighbor | |||||||
1 | − 1.85 | (− 2.03 to − 1.64) | 9.2 | 4366 | 2302 | 2.27 (2.0 to 2.5) | 27.5 (24.9 to 30.2) |
5 | − 1.78 | (− 2.00 to − 1.62) | 10.4 | 4366 | 10,812 | 2.3 (2.2 to 2.5) | 27.5 (23.9 to 31.2) |
10 | − 1.76 | (− 1.98 to − 1.64) | 11.4 | 4366 | 20,011 | 2.3 (2.2 to 2.4) | 27.6 (23.7 to 31.5) |
Maximum caliper distance | |||||||
0.01 | − 1.86 | (− 2.01 to − 1.65) | 6.1 | 4354 | 2,301 | 2.46 (2.37 to 2.56) | 24.5 (20.7 to 28.3) |
0.05 | − 2.15 | (− 2.02 to − 1.64) | 43.9 | 4366 | 2283 | 2.31 (2.06 to 2.59) | 26.3 (22.5 to 30.1) |
Kernel | − 2.13 | (− 2.01 to − 1.66) | 41.7 | 4366 | 145,864 | 2.88 (2.77 to 2.99) | 26.2 (22.8 to 29.5) |