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Table 2 Prospective relationships between changes in work factors and reduced work ability

From: Changes in work situation and work ability in young female and male workers. A prospective cohort study

 

All workers N = 1,311

Males N = 593 (45%)

Females N = 718 (55%)

   

Univariate analysis1

Multivariate analysis2

  

Univariate analysis

Multivariate analysis3

  

Univariate analysis

Multivariate analysis3

 

Exposed

Cases

PR

95% CI

PR

95% CI

Exposed

Cases

PR

95% CI

PR

95% CI

Exposed

Cases

PR

95% CI

PR

95% CI

Changes in physical work factors

                  

Increased daily computer use in general

239

82

1.0

0.86-1.28

  

102

32

1.0

0.75-1.42

  

137

50

1.1

0.83-1.36

  

Decreased rests during computer use in general

378

124

1.0

0.84-1.18

  

158

50

1.1

0.80-1.38

  

220

74

1.0

0.76-1.19

  

Increased time with hands above shoulder level

246

77

0.9

0.77-1.15

  

108

32

1.0

0.70-1.33

  

138

45

0.9

0.71-1.20

  

Increased time with flexed or extended neck

345

112

1.0

0.82-1-17

  

154

50

1.1

0.83-1.42

  

191

62

0.9

0.72-1.15

  

Increased time with flexed back

297

94

1.0

0.79-1.16

  

142

43

1.0

0.74-1.32

  

155

51

0.9

0.72-1.20

  

Increased lifting 5–10 kg

249

77

0.9

0.76-1.15

  

127

32

0.8

0.57-1.09

  

122

45

1.1

0.83-1.39

  

Increased lifting 11–15 kg

189

64

1.1

0.85-1.32

  

112

37

1.1

0.82-1.48

  

77

27

1.0

0.73-1.39

  

Increased lifting 16–25 kg

136

46

1.1

0.82-1.36

  

84

25

1.0

0.68-1.38

  

52

21

1.2

0.83-1.66

  

Increased lifting > 25 kg

115

42

1.2

0.89-1.48

  

70

23

1.1

0.76-1.56

  

45

19

1.2

0.86-1.76

  

Increased forceful grip

221

82

1.2 a

0.97-1.43

  

119

42

1.2

0.91-1.59

  

102

40

1.2

0.88-1.50

  

Increased use of vibrating tools

58

21

1.1

0.79-1.60

  

33

11

1.1

0.67-1.81

  

25

10

1.2

0.71-1.89

  

Changes in psychosocial work factors

Increased job demands

385

137

1.1

0.94-1.31

  

150

47

1.0

0.79-1.36

  

235

90

1.2

0.94-1.42

  

Decreased job control

388

187

1.8 a

1.57-2.11

1.7

1.49-2.12

168

78

1.9 a

1.52-2.42

1.7

1.36-2.23

220

109

1.8 a

1.44-2.12

1.6

1.34-1.99

Decreased social support at work

420

173

1.4 a

1.21-1.65

1.2

1.00-1.38

179

75

1.6 a

1.29-2.08

1.4

1.06-1.74

241

98

1.3 a

1.04-1.56

  

Decreased reward relative to effort

415

159

1.3 a

1.08-1.48

  

189

69

1.3 a

1.03-1.68

  

226

90

1.2 a

0.99-1.50

  

Increased negative influence of job demands on private life

411

180

1.6 a

1.34-1.82

1.5

1.25-1.69

172

71

1.6 a

1.24-2.01

1.5

1.20-1.91

239

109

1.6 a

1.27-1.89

1.4

1.15-1.71

Increased work outside the workplace

317

117

1.2 a

0.98-1.38

  

138

43

1.0

0.77-1.37

  

179

74

1.3 a

1.02-1.57

  

Increased overtime work (>12 h/day)

319

109

1.1

0.89-1.27

  

167

54

1.1

0.83-1.41

  

152

55

1.0

0.83-1.34

  

Increased reachable by mobile phone out of work time

340

122

1.1

0.96-1.35

  

172

61

1.2 a

0.97-1.60

  

168

61

1.1

0.84-1.33

  

Increased noise annoyance at the workplace

427

154

1.1 a

0.98-1.35

  

190

60

1.1

0.81-1.36

  

237

94

1.2 a

0.99-1.50

  
  1. * The figures in boldface were statistically significant (the lower limit of the 95% CI being > 1.00).
  2. 1 Adjusted for sex.
  3. 2 Backward stepwise analyses, adjusted for sex.
  4. 3 Backward stepwise analyses.
  5. a Work factor with a p-value ≤ 0.2 in the univariate analysis and accordingly included in the starting multivariate model.
  6. The results are presented for the study sample in whole and for female and male workers separated*.
  7. (N = number of workers, cases = exposed individuals reported reduced work ability, PR = prevalence ratios, 95% CI = 95% confidence interval).
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BMC Public Health

ISSN: 1471-2458

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