Table 3 Source of ethnicity data classification by timeframe of publication
Source of classification | 1946–2000 | 2001–2019 | 2020–2022 | Total |
|---|---|---|---|---|
Total Number of Papers | 3 | 29 | 12 | 44 |
Self-reported (excluding medical records) | ||||
 4 choices | 0 | 2 (6.9%) | 0 | 2 (4.5%) |
 7 choices | 0 | 0 | 1 (8.3%) | 1 (2.3%) |
 8 choices | 0 | 1 (3.4%) | 0 | 1 (2.3%) |
 9 choices (1991 ONS) | 0 | 3 (10.3%) | 0 | 3 (6.8%) |
 16 choices (2001 ONS) | 0 | 2 (6.9%) | 1 (8.3%) | 3 (6.8%) |
 18 choices | 0 | 0 | 2 (16.7%) | 2 (4.5%) |
 20 choices | 0 | 1 (3.4%) | 0 | 1 (2.3%) |
 Did not report | 0 | 6 (20.7%) | 0 | 6 (13.6%) |
Interview Rated/Prescribed | ||||
 Based on appearance and grandparental origin | 0 | 1 (3.4%) | 0 | 1 (2.3%) |
 Based on family origin | 0 | 1 (3.4%) | 0 | 1 (2.3%) |
 Based on self-report, place of birth and parental place of birth | 0 | 1 (3.4%) | 0 | 1 (2.3%) |
 Based on language spoke at home | 0 | 1 (3.4%) | 0 | 1 (2.3%) |
 Based on names | 1 (33.3%) | 0 | 0 | 1 (2.3%) |
 Based on Mother's birthplace | 1 (33.3%) | 0 | 0 | 1 (2.3%) |
 Did not specify | 0 | 1 (3.4%) | 0 | 1 (2.3%) |
 Medical Records (self-reported or prescribed) | 0 | 6 (20.7%) | 7 (58.3%) | 13 (29.5%) |
Other | ||||
 Algorithm (based on forename-surname pairs) | 0 | 1 (3.4%) | 1 (8.3%) | 2 (4.5%) |
Did not describe how ethnicity was asked | ||||
| Â | 1 (33.3%) | 2 (6.9%) | 0 | 3 (6.8%) |