Table 1 Characteristics of respondents at time 1 and time 2. Variables are self-reported from the time 1 study survey with the exception of sex, age and SIMD of practice which were extracted from the Management Information Dental Accounting System Database NHS National Services Scotland, Information Services Division, at the end of March 2011
|  | Time 1 N = 1090 | Time 2 N = 709 |
|---|---|---|
Professional status at time 1 | ||
 Principal dentist | 38.6 (421) | 39.8 (282) |
 Associate dentist | 51.7 (564) | 51.1 (362) |
 Salaried dentist | 9.3 (101) | 8.8 (62) |
 Vocational trainee | 0.2 (2) | 0.1 (1) |
 Associate + salaried | 0.1 (1) | 0.1 (1) |
 Missing | 1 | 1 |
Working/worked in a Childsmile pilot practice | ||
 No | 51.5 (557) | 50.5 (350) |
 Yes | 48.5 (525) | 49.5 (343) |
 Missing | 8 | 16 |
Length of time practicing years at time 1 | ||
 Median (Q1, Q3) | 15 [6, 25] | 16 [6, 25] |
 Min, max | 1 to 46 | 1 to 46 |
 Mean (SD) | 16.4 (10.6) | 16.4 (10.4) |
 Missing | 17 | 10 |
Sex | ||
 Male | 52.8 (559) | 50.0 (344) |
 Female | 47.2 (500) | 50.0 (344) |
 Missing | 31 | 21 |
Age (years) at time 1 | ||
 Median (Q1, Q3) | 39 (30, 49) | 40 (30, 48) |
 Min, max | 23, 67 | 23, 67 |
 Mean (SD) | 39.9 (10.6) | 39.9 (10.3) |
 Missing | 31 | 21 |
SIMD quintile of practice (national) at time 1 | ||
 Q1—most deprived | 21.4 (226) | 21.3 (146) |
 Q2 | 27.0 (285) | 26.8 (184) |
 Q3 | 20.2 (214) | 18.5 (127) |
 Q4 | 15.0 (159) | 16.6 (114) |
 Q5—least deprived | 16.4 (173) | 16.9 (116) |
 Missing | 33 | 22 |