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. 2019 Feb 24;9(2):e021690. doi: 10.1136/bmjopen-2018-021690

Table 1.

Basic characteristics for participants of full-time jobs (n=345)

All participants Occupational activity type Group differences*
Sitting a Standing b Walkingc Physical labourd
N 345 239 (69.3) 47 (13.6) 48 (13.9) 11 (3.2)
Age, mean (SD) 50.3 (6.9) 50.1 (7.0) 50.7 (6.8) 50.5 (6.7) 52.6 (6.7)
Women, n (%) 156 (45.2) 99 (41.4) 25 (53.2) 29 (60.4) 3 (27.3) a, d<c
Body mass index, kg/m2†, mean (SD) 22.8 (3.2) 23.0 (3.4) 21.9 (2.4) 22.3 (2.6) 25.5 (4.2) b, c<d
Residence area, n (%)
 Matsuyama city 170 (49.3) 98 (41.0) 37 (78.7) 26 (54.2) 9 (81.8) a<b,d
b<c
 Koto Ward 175 (50.7) 141 (59.0) 10 (21.3) 22 (45.8) 2 (18.2)
Education†, n (%)
 High school or less 109 (31.6) 59 (24.8) 23 (48.9) 21 (43.8) 6 (54.5) a<b, c, d
 Greater than high school 235 (68.1) 179 (75.2) 24 (51.1) 27 (56.3) 5 (45.5)
Marital status‡, n (%)
 Single 85 (24.6) 60 (25.4) 11 (23.4) 12 (25.0) 2 (18.2)
 Married 257 (74.5) 176 (74.6) 36 (76.6) 36 (75.0) 9 (81.8)
Occupation§, n (%)
 Professional and engineering 71 (20.6) 39 (16.5) 13 (28.3) 18 (37.5) 1 (10.0)
 Administrative and managerial 59 (17.1) 56 (23.6) 0 (0) 2 (4.2) 1 (10.0)
 Clerical 114 (33.0) 111 (46.8) 2 (4.3) 1 (2.1) 0 (0.0)
 Sales 17 (4.9) 7 (3.0) 4 (8.7) 6 (12.5) 0 (0.0)
 Service 34 (9.9) 9 (3.8) 17 (37) 8 (16.7) 0 (0.0)
 Security 1 (0.3) 0 (0.0) 1 (2.2) 0 (0.0) 0 (0.0)
 Agricultural, forestry and fishery 4 (1.2) 0 (0.0) 1 (2.2) 3 (6.3) 0 (0.0)
 Transport and machine operation 9 (2.6) 1 (0.4) 0 (0.0) 4 (8.3) 4 (40.0)
 Manufacturing process 14 (4.1) 4 (1.7) 5 (10.9) 1 (2.1) 4 (40.0)
 Others 17 (4.9) 10 (4.2) 2 (4.3) 5 (10.4) 0 (0.0)

*Significant differences between four occupational activity types with one-way analysis of variance for continuous variables; Χ2 test for category variables.

†One missing in sitting group.

‡Three missing in sitting group.

§Two missing in sitting group, one missing in both standing group and physical labour group.

a= sitting; b=standing, c=walking; d=physical labour.