Background
Study design and procedure
Study population
Intervention group | Reference group | p-valuea
| |
---|---|---|---|
N = 371 |
N = 193 | ||
Women, n (%) | 292 (79) | 151 (78) | 0.914 |
Age (years), n (%) | 50 (23–66) | 51 (23–73) | 0.078 |
Profession, median (range) | |||
Dentists | 243 (65) | 112 (58) | |
Hygienists | 105 (28) | 68 (35) | |
Orthodontic assistants | 23 (6) | 13 (7) | 0.195 |
Questionnaire |
n = 236 |
n = 130 | |
Dental work (hours/week), n (%) | |||
0–29 | 75 (32) | 49 (38) | |
30–40 | 161 (68) | 81 (62) | 0.299 |
Perceived exertionb n (%) | |||
0–7 | 124 (53) | 72 (58) | |
>7 | 110 (47) | 53 (42) | 0.437 |
Complaints frequencyc n (%) | |||
2 times a month or less | 83 (35) | 58 (45) | |
Once a week or more | 153 (65) | 70 (55) | 0.071 |
Clinical examination (HECO) |
n = 232 |
n = 89 | |
Diagnoses in neck/shoulders, n (%) | 39 (17) | 6 (7) | 0.020 |
Neck/shoulder paind n (%) | 129 (56) | 36 (41) | 0.024 |
Work abilitye median (range) | 9 (3–10) | 9 (4–10) | 0.588 |
Methods
Baseline questionnaire
Frequency of complaints
Perceived exertion
Clinical examinations
Musculoskeletal pain
Work ability
The intervention
Follow-up measurements
Questionnaire
Clinical examination
Statistical analysis
Results
Baseline
Follow-up
Intervention | Referent | p-valuea
| |
---|---|---|---|
Questionnaire |
n = 236 |
n = 130 | |
Complaints frequency | |||
Worse | 21 (9) | 26 (20) | |
Unchanged | 123 (52) | 57 (44) | |
Better | 92 (39) | 47 (36) | 0.060 |
Perceived exertionb
| |||
Worse | 55 (24) | 44 (35) | |
Unchanged | 49 (21) | 33 (26) | |
Better | 129 (55) | 48 (38) | 0.003 |
Clinical examination (HECO) |
n = 232 |
n = 89 | |
Musculoskeletal painc
| |||
Worse | 20 (9) | 13 (15) | |
Unchanged | 167 (74) | 66 (75) | |
Better | 39 (17) | 9 (10) | 0.047 |
One or more diagnoses | |||
Worse | 19 (8) | 9 (10) | |
Unchanged | 186 (80) | 79 (89) | |
Better | 27 (12) | 1 (1) | 0.025 |
Work ability | |||
Worse | 51 (25) | 23 (30) | |
Unchanged | 82 (40) | 39 (51) | |
Better | 71 (35) | 14 (18) | 0.040 |
Frequency of complaints at baseline | ||||||
---|---|---|---|---|---|---|
Twice a month or less | Once a week or more | |||||
Intervention group | Reference group | p-valueb
| Intervention group | Reference group | p-valueb
| |
Questionnaire |
n = 60 |
n = 58 |
n = 110 |
n = 70 | ||
Frequency of complaints | ||||||
Higher | 7 (12) | 18 (31) | 5 (5) | 8 (11) | ||
Unchanged | 42 (70) | 29 (50) | 49 (45) | 28 (40) | ||
Lower | 11 (18) | 11 (19) | 0.112 | 56 (51) | 34 (49) | 0.392 |
Perceived exertionc,d
| ||||||
Worse | 19 (33) | 22 (41) | 19 (17) | 22 (32) | ||
Unchanged | 10 (17) | 17 (31) | 27 (25) | 15 (22) | ||
Better | 29 (50) | 15 (28) | 0.083 | 64 (58) | 32 (46) | 0.040 |
Neck/shoulder pain at baseline | ||||||
---|---|---|---|---|---|---|
No | Yes | |||||
Intervention group | Reference group | p-valueb
| Intervention group | Reference group | p-valueb
| |
Clinical examination (HECO) |
n = 85 |
n = 52 |
n = 102 |
n = 36 | ||
Musculoskeletal painc
| ||||||
Worse | 15 (18) | 13 (25) | ||||
Unchanged | 68 (82) | 39 (75) | 0.386 | 67 (68) | 27 (75) | |
Better | 32 (32) | 9 (25) | 0.527 | |||
One or more diagnoses | ||||||
Worse | 7 (8) | 3 (6) | 7 (7) | 6 (17) | ||
Unchanged | 78 (92) | 49 (94) | 0.742 | 74 (73) | 29 (81) | |
Better | 21 (21) | 1 (3) | 0.006 | |||
Work abilityd
| ||||||
Worse | 16 (22) | 8 (20) | 23 (25) | 15 (42) | ||
Unchanged | 38 (51) | 22 (55) | 32 (34) | 17 (47) | ||
Better | 20 (27) | 10 (25) | 1.000 | 38 (41) | 4 (11) | 0.003 |