Table 1 Baseline characteristics of the study participants
From: The impact of Raynaud’s phenomenon on work ability – a longitudinal study
Baseline variable | Women | Men | ||||||
|---|---|---|---|---|---|---|---|---|
RP + | RP − | RP + | RP − | |||||
N (%) | Mean (SD) | N (%) | Mean (SD) | N (%) | Mean (SD) | N (%) | Mean (SD) | |
Study participants | 390 (14.5) | 2,291 (85.5) | 290 (12.7) | 1,994 (87.3) | ||||
Age (at enrollment) | 50 (12) | 51 (13) | 55 (12) | 53 (13) | ||||
Body mass index (kg/m2) | 23.7 (3.7) | 26.0 (5.1) | 25.6 (3.4) | 26.7 (3.9) | ||||
Current daily smoking | 14 (3.6) | 170 (7.5) | 14 (4.8) | 86 (4.4) | ||||
Cigarettes per day | 10 (5) | 9 (5) | 11 (6) | 11 (7) | ||||
Current daily snuff use | 33 (8.5) | 161 (7.1) | 80 (27.8) | 383 (19.4) | ||||
Snuff boxes per week | 4 (3) | 4 (3) | 4 (2) | 4 (3) | ||||
Occupation a | ||||||||
Armed forces | 0 (0.0) | 1 (0.1) | 3 (1.1) | 14 (0.7) | ||||
Managers | 27 (7.1) | 105 (4.7) | 22 (7.8) | 105 (5.4) | ||||
Professionals | 118 (31.1) | 629 (27.9) | 41 (14.5) | 298 (15.3) | ||||
Technicians and associate professionals | 42 (11.1) | 211 (9.4) | 46 (16.3) | 291 (15.0) | ||||
Clerical support workers | 44 (11.6) | 269 (12.0) | 14 (4.9) | 146 (7.5) | ||||
Service and sales workers | 49 (12.9) | 402 (17.9) | 14 (4.9) | 142 (7.3) | ||||
Skilled agricultural, forestry and fishery workers | 2 (0.5) | 15 (0.7) | 3 (1.1) | 41 (2.1) | ||||
Crafts and related trades workers | 5 (1.3) | 26 (1.2) | 30 (10.6) | 177 (9.1) | ||||
Plant and machine operators and assemblers | 7 (1.8) | 31 (1.4) | 38 (13.4) | 214 (11.0) | ||||
Elementary occupations | 8 (2.1) | 44 (2.0) | 3 (1.1) | 43 (2.2) | ||||
Self-employed | 6 (1.6) | 36 (1.6) | 6 (2.1) | 51 (2.6) | ||||
Sick leave | 9 (2.4) | 32 (1.4) | 1 (0.4) | 11 (0.6) | ||||
Parental leave | 2 (0.5) | 20 (0.9) | 0 (0) | 0 (0) | ||||
Students | 14 (3.7) | 84 (3.7) | 3 (1.1) | 53 (2.7) | ||||
Retired | 42 (11.1) | 312 (13.9) | 56 (19.8) | 324 (16.7) | ||||
Physical workload b | ||||||||
Low | 243 (75.5) | 1,289 (69.6) | 124 (55.6) | 875 (55.6) | ||||
Medium | 31 (9.6) | 201 (8.8) | 51 (22.9) | 388 (24.6) | ||||
High | 48 (14.9) | 363 (19.6) | 48 (21.5) | 312 (19.8) | ||||
Occupational cold exposure c | ||||||||
Low | 255 (67.8) | 1,552 (70.3) | 115 (42.3) | 905 (47.1) | ||||
High | 121 (32.2) | 655 (29.7) | 157 (57.7) | 1,017 (52.9) | ||||
Cardiovascular disease d | ||||||||
No | 323 (85.4) | 1,762 (78.4) | 213 (76.3) | 1,383 (71.7) | ||||
Yes | 55 (14.6) | 485 (21.6) | 66 (23.7) | 545 (28.3) | ||||