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Table 2 Sample characteristics (n = 221)

From: Psychosocial working conditions, asthma self-management at work and asthma morbidity: a cross-sectional study

Characteristic  
Age (years)
 Mean (SD) 50.6 (8.7)
 Missing values; n (%) 2 (.9)
Sex
 Women; n (%) 119 (53.8)
 Men; n (%) 102 (46.2)
 Missing values; n (%)
Highest school degree
 Lower than secondary school degree; n (%) 82 (37.1)
 Secondary school degree; n (%) 74 (33.5)
 Higher than secondary school degree; n (%) 62 (28.1)
 Missing values; n (%) 3 (1.4)
Body mass index (BMI)
 Underweight, normal (BMI < 25); n (%) 61 (27.6)
 Overweight (25 ≤ BMI < 30); n (%) 81 (36.7)
 Obese (BMI ≥ 30); n (%) 76 (34.4)
 Missing values; n (%) 3 (1.4)
Smoker
 No, never; n (%) 110 (49.8)
 No, not anymore; n (%) 96 (43.4)
 Current; n (%) 13 (5.9)
 Missing values; n (%) 2 (.9)
Job Decision Latitude (JDL)a
 Mean (SD) 45.61 (22.83)
 Missing values; n (%) 2 (.9)
Supporta
 Mean (SD) 53.65 (25.65)
 Missing values; n (%) 12 (5.4)
DReAM (working conditions)b
 Mean (SD) 18.50 (5.05)
 Missing values; n (%) 1 (.5)
Physical activity
 More than once a week; n (%) 144 (65.2)
 Once a week or less; n (%) 75 (33.9)
 Missing values; n (%) 2 (.9)
Trigger avoidancec
 Mean (SD) .6 (.5)
 Missing values; n (%) 1 (.5)
Acute asthma symptom managementd
 Mean (SD) 2.3 (2.0)
 Missing values; n (%) 5 (2.3)
Communicatione
 Mean (SD) .3 (.6)
 Missing values; n (%) 4 (1.8)
Asthma controlf
 Controlled 76 (34.4)
 Uncontrolled 145 (65.6)
 Missing values
Asthma-specific quality of lifeg
 Mean (SD) 4.4 (1.8)
 Missing values; n (%) 1 (.5)
  1. SD standard deviation
  2. a“Measured by the Copenhagen Psychosocial Questionnaire [37], range: 0–100, higher values indicating higher levels of JDL and support
  3. b“Determinants of work-related asthma self-management (DReAM)” measured by 7 self-constructed items, range: 7–28, lower values indicating better working conditions
  4. cMeasured by 1 self-constructed item, range: 0 = fit of need and conditions versus 1 = need unfulfilled
  5. dMeasured by 7 self-constructed items, range: 0 = fit of need and conditions to 7 = all needs unfulfilled
  6. eMeasured by 2 self-constructed items, range: 0 = fit of need and conditions to 2 = both needs unfulfilled
  7. fMeasured by the Asthma Control Test [22], range: 5–25, higher values indicating higher levels of asthma control
  8. gMeasured by the Marks Asthma Quality of Life Questionnaire [24], range: 0–10, lower values indicating better quality of life