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Table 1 Descriptive statistics at baseline

From: Working conditions mediate the association between social class and physical function in older age in Sweden: a prospective cohort study

Occupational social class
  Unskilled blue-collar Skilled blue-collar Lower white-collar Upper
white-collar
Total (n)
Total, n (%)a 285 (33.73) 158 (18.70) 197 (23.31) 205 (24.26) 845
Mean age (SD) 59 (3.30) 60 (3.87) 60 (3.38) 59 (3.22) 59 (3.42)
Sex, n (%)b
Women 190 (66.7) 35 (22.2) 96 (48.7) 74 (36.1) 395 (46.7)
Men 95 (33.3) 123 (77.8) 101 (51.3) 131 (63.9) 450 (53.3)
Physical working conditions, n (%)b
 No exposure 63 (22.1) 31 (19.6) 100 (50.8) 137 (66.8) 331 (39.2)
 Low exposure 147 (51.6) 52 (32.9) 51 (25.9) 58 (28.3) 308 (36.4)
 High Exposure 75 (26.3) 75 (47.5) 46 (23.3) 10 (4.9) 206 (24.4)
Psychosocial working conditions, n (%)b
 Passive 204 (71.5) 94 (59.5) 78 (39.6) 18 (8.8) 394 (46.6)
 High-strain 43 (15.1) 18 (11.4) 39 (19.8) 19 (9.2) 119 (14.1)
 Low-strain 21 (7.4) 34 (21.5) 50 (25.4) 83 (40.5) 188 (22.2)
 Active 17 (6.0) 12 (7.6) 30 (15.2) 85 (41.5) 144 (17.0)
Level of education, n (%)
 Compulsory 160 (78.1) 97 (49.2) 48 (30.4) 51 (17.9) 356 (42.1)
 Beyond compulsory 45 (22.0) 100 (50.8) 110 (69.6) 234 (82.1) 489 (57.9)
Health problems at baseline, n (%)b
 None or mild 224 (78.6) 134 (84.8) 173 (87.8) 191 (93.2) 722 (85.4)
 Severe 61 (21.4) 24 (15.2) 24 (12.2) 14 (6.8) 123 (14.6)
Mobility at baseline, n (%)b
 Unrestricted 214 (75.1) 126 (79.7) 159 (80.7) 183 (89.3) 682 (80.7)
 Restricted 71 (24.9) 32 (20.3) 38 (19.3) 22 (10.7) 163 (19.3)
  1. SD Standard deviation, n Analytic size
  2. aRow percentage
  3. bColumn percentage