Table 1

Comparison between the data obtained during the first study and the follow-up study*; mean values (), standard deviations (s) of age (years) and MBI scores, t-test results (p)

first study

Follow-up study

n

s

s

p₂

Disability last quarter [days]

all

105

27.5

35.6

8.6

19.1

< .0001

males

34

29.8

39.2

10.0

21.9

.005

females

71

26.4

34.0

7.9

17.8

< .0001

p₁

.653

.599

high school

18

34.3

41.8

10.7

22.0

.045

other school types

87

26.1

34.3

8.1

18.6

< .0001

p₁

.379

.603

Emotional Exhaustion [score]

all

109

32.0

11.8

25.1

12.6

< .0001

males

34

38.8

8.6

29.5

13.3

< .0001

females

75

28.9

11.8

23.1

11.9

< .0001

p₁

< .0001

.013

high school

19

37.7

10.2

26.5

12.5

< .0001

other school types

90

30.8

11.8

24.8

12.7

< .0001

p₁

.019

.594

Depersonalisation [score]

all

109

7.9

7.1

7.0

5.9

.085

males

34

10.2

8.0

8.6

6.0

.075

females

75

6.8

6.4

6.2

5.7

.367

p₁

.021

.052

high school

19

10.6

7.8

8.9

5.9

.121

other school types

90

7.3

6.8

6.6

5.8

.214

p₁

.065

.111

Personal Accomplishment [score]

all

105

27.9

9.0

29.3

8.5

.046

males

31

24.9

9.3

27.9

9.4

.027

females

74

29.2

8.7

29.8

8.2

.409

p₁

.026

.295

high school

19

25.7

6.9

26.2

7.6

.622

other school types

86

28.5

9.4

29.9

8.6

.053

p₁

.229

.086

*The table contains only individuals who returned to work after therapy

p₁: Results of t-tests with unconnected random samples in the above groups.

p₂: Results of t-tests with connected random samples obtained in the same participants during the first study and the follow-up study.

Wegner et al. Journal of Occupational Medicine and Toxicology 2011 6:37   doi:10.1186/1745-6673-6-37