Table 1 Sample selection criteria and resulting sample size
Surgery | Initial sample | Records with missing values for the education variable | Missing values recovery from record linkage between the HDDs | Missing values recovery from record linkage with the Turin municipal registry | Providers with few cases | Waiting times higher than the 99thpercentile | Final sample |
|---|---|---|---|---|---|---|---|
CABG | 4,465 | 1,543 | 926 | 56 | 2 | 40 | 3,862 |
Angioplasty | 9,973 | 5,115 | 1,770 | 893 | 16 | 77 | 7,428 |
Coronarography | 26,307 | 12,081 | 4,693 | 1,640 | 36 | 213 | 20,310 |
Endarterectomy | 4,126 | 2,115 | 731 | 386 | 8 | 33 | 3,087 |
Hip replacement | 15,982 | 5,462 | 2,245 | 639 | 10 | 134 | 13,260 |
Cholecystectomy | 17,246 | 4,511 | 732 | 783 | 24 | 143 | 14,083 |