Table 1.
Demographics and treatment information
| Trial | Variable | Concordance | Descriptions of discrepancies |
|---|---|---|---|
| COST | |||
| Demographics | Gender | 100% (98/98) | |
| Race | 77.6% (76/98) | Race was missing in 22 cases in the COST database, but was known in CR | |
| Date of birth | 98.0% (96/98) | DOB was missing for one patient in the CR, but was known in the COST database. For another patient, year of DOB was recorded as 1935 in the COST database, but 1934 in the CR | |
| Treatment | Surgical date | 95.9% (94/98) | The surgical dates of four patients in the CR were 02/17/1995a, 03/28/2000a, 01/27/1999a, and 02/14/2000a, but were 02/28/1995, 02/29/2000, 02/05/1999, and 07/11/2000 in the COST database |
| Primary site | 95.9% (94/98) | Overlapping lesions were recorded in CR for all the four patients. In COST database, recorded sites were sigmoid for one patient and right for the other three patients | |
| Z0030 | |||
| Demographics | Gender | 100% (55/55) | |
| Race | 98.2% (54/55) | Race was missing in one case in the CR, but was known in the Z0030 database | |
| Date of birth | 96.4% (53/55) | For one patient, the DOB was recorded as 06/20/1926 in the Z0030 database, but 01/29/1926 in the CR. For another patient, the year of DOB was recorded as 1934 in Z0030 database, but 1924 in the CR (month and day of DOB matches) | |
| Treatment | Surgical date | 100% (55/55) | |
| Primary site | 92.3% (51/55) | For three patients, upper lobes were indicated in the CR, but upper and lower, and upper and middle were recorded in the Z0030 database for one and two patients, respectively. The fourth patient had upper lobe in the CR and left hilum in the Z0030 database | |
DOB, date of birth, CR: cancer registry.
a
These dates are the dates of the biopsy. Upon review, it was discovered that a CR software conversion caused these discrepancies; in the original version of the CR, the dates matched those of the RCT.