Table 1.
Sample selection: exclusions and inclusions
| N | % | |
|---|---|---|
| Albums | 1210 | 100.0 |
| Excluded | ||
| Compilation albums | 2 | 0.2 |
| Soundtracks | 9 | 0.7 |
| Additional albums by performers already included* | 279 | 22.8 |
| Included | 923 | 76.3 |
| Individuals (from 923 albums) | 1714 | 100.0 |
| Excluded | ||
| Excluded genre† | 81 | 4.7 |
| Not from North America or Europe | 69 | 4.0 |
| Included | 1564 | 91.3 |
| Missing data | ||
| No nationality and date of birth | 25 | 1.6 |
| No nationality | 1 | 0.1 |
| No date of birth | 49 | 3.1 |
| Included | 1489 | 95.2 |
*Where additional albums included new band members such individuals were also included in the final data set.
†Country, blues, jazz, vocal, celtic, folk, bluegrass and spoken word.