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Table 2 Prevalence and duration of musculoskeletal and psychological SA for male and female employees in the intervention group (IA) and control group (non-IA) in 2000 and 2005, the change over time, and difference-in-difference (DID) estimates (N = 372,199)

From: Impact of the Norwegian Agreement for a More Inclusive Working Life on diagnosis-specific sickness absence in young adults: a difference-in-difference analysis

 

Intervention

Control

 

2000

N = 39,762 (20%)

2005

N = 71,699 (27%)

Change

2000–2005

2000

N = 156,464 (80%)

2005

N = 156,464 (80%)

Change

2000–2005

DID Estimatea

N (%)

Mean (SD)

Median (IQR)

N (%)

Mean (SD)

Median (IQR)

PP

Daysb

N (%)

Mean (SD)

Median (IQR)

N (%)

Mean (SD)

Median (IQR)

PP

Daysb

Marginal Change

95% CI

Musculoskeletal (code L)

Prevalence

  Men

1033 (7.1)

  

2014 (6.4)

  

−0.7

 

6626 (7.5)

  

7895 (6.7)

  

−0.8

 

0.3

− 0.2, 0.9

  Women

2543 (10.1)

  

3383 (8.4)

  

−1.7

 

6380 (9.4)

  

6061 (8.2)

  

−1.2

 

−0.4

− 0.9, 0.1

Duration (days)

  Men

 

98 (102)

54 (28–128)

 

93 (100)

48 (27–115)

 

−5

 

102 (101)

57 (30–134)

 

115 (113)

62 (32–157)

 

13

−16.6

−25.3, −7.9

  Women

 

98 (89)

67 (34–128)

 

113 (113)

62 (31–156)

 

15

 

109 (96)

73 (37–146)

 

129 (120)

74 (34–195)

 

20

−4.3

−10.9, 2.3

Psychological (code P)

Prevalence

  Men

337 (2.3)

  

708 (2.3)

  

0.0

 

1801 (2.0)

  

2602 (2.2)

  

0.2

 

−0.1

−0.4, 0.3

  Women

914 (3.6)

  

2184 (5.4)

  

1.8

 

2313 (3.4)

  

3741 (5.1)

  

1.7

 

0.2

−0.2, 0.6

Duration (days)

  Men

 

114 (112)

59 (30–162)

 

108 (109)

58 (29–145)

 

−6

 

127 (116)

76 (34–193)

 

129 (121)

73 (33–199)

 

2

−6.1

−22.2, 10.0

  Women

 

111 (109)

62 (31–157)

 

125 (118)

74 (32–190)

 

14

 

128 (117)

77 (35–190)

 

142 (125)

87 (36–240)

 

14

−1.4

−12.3, 9.5

  1. a Analyses adjusted for economic activity (13 categories) and mean company size. Bold font indicates estimates are statistically significant at the 5% level
  2. b Calculated using mean days
  3. SA sickness absence, IQR interquartile range, CI confidence interval, SD standard deviation, PP percentage points