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Table 2 Distribution of ERI Items and Outcomes at baseline & follow up

From: The Gutenberg health study: a five-year prospective analysis of psychosocial working conditions using COPSOQ (Copenhagen psychosocial questionnaire) and ERI (effort-reward imbalance)

 

Baseline (t0)

5-year follow-up (t1)

Mean Difference

 

N

Min/Max

Mean

SD

N

Min/Max

Mean

SD

 

Effort (6 items)

4221

6/29

13.4

4.3

3047

6/30

13.2

4.3

−0.2

Reward (11 items)

3385

11/55

48.6

6.5

2514

15/55

48.8

6.3

0.2

ERI-Quotient (Effort/Reward)

3336

0.20/2.98

0.5

0.23

2469

0.20/2.81

0.5

0.23

0

Overcommitment (6 Items)

4206

6/24

13.2

3.8

3049

6/24

12.9

3.8

−0.3

Effort (0–100)

4318

0/100

31.0

18.0

3108

0/100

29.9

18.0

−1.1

Reward (0–100)

4261

0/100

86.0

14.7

3085

9.1/100

86.6

14.2

0.6

ERI Quotient (Effort/Reward, 100 scale)

4263

0/856

39.5

34.6

3084

0/779

37.8

34.7

−1.7

Overcommitment (0–100)

4308

0/100

39.9

21.3

3102

0/100

38.3

21.3

−1.6

Outcomes (0–100)

 Job satisfaction

4264

4.71/100

67.9

15.4

3090

0/100

69.0

15.5

1.1

 General health (1 Item)

4302

0/100

72.5

16.6

3110

10/100

73.0

15.7

0.5

 Copenhagen Burnout Inventory

4278

0/100

37.7

17.4

3077

0/100

36.0

18.3

−1.7

 Satisfaction with Life Scale

4265

0/100

69.6

18.3

3071

0/100

71.6

17.7

2.0