Table 2 Concordance between workers in regard to information about time.
Question | Comparisons (number of pairs) | mean | Mean Difference years | Std of the mean difference | 10 percentile | 50 percentile | 90 percentile |
|---|---|---|---|---|---|---|---|
The year all use of copper amalgam ended | All (19) | 1984 | 7.3 | 6.5 | 0.0 | 5.0 | 20.0 |
Both dental nurses (13) | 9.0 | 7.0 | 1.0 | 7.0 | 21.8 | ||
One dentist and one dental nurse ( 6) | 3.5 | 3.1 | 0.0 | 4.0 | 8.0 | ||
The year the use of the Dentomat started | All (24) | 1976 | 4.7 | 5.8 | 0.0 | 2.5 | 15.5 |
Both dental nurses (10) | 4.2 | 4.9 | 0.0 | 4.0 | 14.4 | ||
One dentist and one dental nurse (13) | 5.5 | 6.7 | 0.0 | 2.0 | 18.4 | ||
The year the use of the Dentomat ended. | All (26) | 1995 | 5.5 | 4.9 | 0.0 | 5.0 | 12.9 |
Both dental nurses (12) | 7.4 | 4.9 | 0.6 | 7.0 | 15.7 | ||
One dentist and one dental nurse (12) | 3.5 | 4.2 | 0.0 | 4.5 | 9.4 | ||
Both dentists (2) | 6.5 | 4.9 |