Table 1 Demographic characteristics of the sample
Variables | Participants at randomisation | Participants at follow-up | ||
|---|---|---|---|---|
Personalised | Non-personalised | Personalised | Non-personalised | |
(n = 85) | (n = 86) | (n = 56) | (n = 55) | |
Age, y, n (%) | ||||
< 20 | 7 (8.2) | 5 (5.8) | 1 (1.8) | 2 (3.6) |
20–29 | 12 (14.1) | 22 (25.6) | 7 (12.5) | 7 (12.7) |
30–39 | 28 (32.9) | 25 (29.1) | 18 (32.1) | 17 (30.9) |
40–49 | 21 (24.7) | 18 (20.9) | 20 (35.7) | 16 (29.1) |
50–59 | 12 (14.1) | 10 (11.6) | 6 (10.7) | 8 (14.5) |
60–69 | 5 (5.9) | 6 (7.0) | 4 (7.1) | 5 (9.1) |
Mean (SD) | 38.9 (12.8) | 37.3 (13.0) | 40.9 (11.8) | 41.2 (12.3) |
Median (min. to max.) | 37 (17–69)a | 36 (18–69)a | 40 (19–69) | 40 (19–69) |
Gender, n (%) | ||||
Female | 54 (63.5) | 64 (74.4) | 34 (60.7) | 41 (74.5) |
Educational level, n (%) | ||||
Less than third level | 50 (58.8) | 49 (57.0) | 31 (55.4) | 29 (52.7) |
Third level and more | 31 (36.5) | 28 (32.6) | 25 (44.6) | 20 (36.4) |
Still in education | 1 (1.2) | 6 (7.0) | 0 (0.0) | 3 (5.5) |
Missing | 3 (3.5) | 3 (3.5) | 0 (0.0) | 3 (5.5) |
Smoking status, n (%) | ||||
Non-smoker | 57 (67.1) | 62 (72.1) | 43 (76.8) | 42 (76.4) |
Smoker | 28 (32.9) | 24 (27.9) | 13 (23.2) | 13 (23.6) |
Smart phone, n (%) | ||||
Non-possession | 15 (17.6) | 15 (17.4) | 12 (21.4) | 12 (21.8) |
Possession | 64 (75.3) | 64 (74.4) | 41 (73.2) | 40 (72.7) |
Missing | 6 (7.1) | 7 (8.1) | 3 (5.4) | 3 (5.5) |
DMFS | ||||
Mean (SD) | 31.0 (19.4) | 31.7 (18.6) | 32.6 (20.2) | 34.9 (19.0) |
Median (min. to max.) | 33 (0–106) | 29.5 (0–66) | 33 (1–106) | 33 (0–66) |
Dental practice, n (%) | ||||
A | 1 (1.2) | 1 (1.2) | 0 (0.0) | 0 (0.0) |
B | 8 (9.4) | 14 (16.3) | 7 (12.5) | 11 (20.0) |
C | 9 (10.6) | 9 (10.5) | 9 (16.1) | 9 (16.4) |
D | 44 (51.8) | 43 (50.0) | 32 (57.1) | 32 (58.2) |
E | 8 (9.4) | 7 (8.1) | 4 (7.1) | 2 (3.6) |
F | 1 (1.2) | 1 (1.2) | 0 (0.0) | 0 (0.0) |
G | 6 (7.1) | 3 (3.5) | 1 (1.8) | 1 (1.8) |
H | 8 (9.4) | 8 (9.3) | 3 (5.4) | 0 (0.0) |