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Table 2 Mean* number of days duration for sick leave periods with 95% confidence intervals (CI), unadjusted and adjusted

From: Sick leave patterns in common musculoskeletal disorders – a study of doctor prescribed sick leave

Women

Unadjusted means

Adjusted means**

Disease group (ICD 10)

Mean

95% CI

Mean

95% CI

Low back pain (M54)

26

23-29

26

24-28

Disc disorders (M51)

161

129-201

150

130-173

Knee osteoarthritis (M17)

90

71-114

81

69-95

Hip osteoarthritis (M16)

120

68-211

116

85-158

Rheumatoid arthritis (M05-M06)

154

122-195

147

119-183

Myalgia (M79)

30

25-36

27

24-31

Age category

    

18-29

35

27-46

35

27-46

30-44

48

41-56

48

41-56

45-54

47

40-55

48

41-56

55-64

57

46-71

54

44-67

Men

Unadjusted means

Adjusted means**

Disease group (ICD 10)

Mean

95% CI

Mean

95% CI

Low back pain (M54)

25

23-28

25

23-28

Disc disorders (M51)

138

115-166

139

116-167

Knee osteoarthritis (M17)

77

63-95

75

61-93

Hip osteoarthritis (M16)

118

183-169

114

79-163

Rheumatoid arthritis (M05-M06)

157

87-285

152

84-277

Myalgia (M79)

24

20-29

24

20-29

Age category

    

18-29

28

22-36

28

22-35

30-44

40

35-46

40

35-46

45-54

39

33-45

39

33-45

55-64

50

42-60

50

41-59

Women and men

Unadjusted means

Adjusted means***

Disease group (ICD 10)

Mean

95% CI

Mean

95% CI

Low back pain (M54)

26

24-28

26

24-28

Disc disorders (M51)

148

128-171

149

130-172

Knee osteoarthritis (M17)

83

71-97

81

69-95

Hip osteoarthritis (M16)

119

88-161

117

86-159

Rheumatoid arthritis (M05-M06)

154

125-191

148

119-183

Myalgia (M79)

27

24-31

27

24-31

Age category

    

18-29

31

26-37

31

26-37

30-44

44

39-48

44

40-49

45-54

43

38-48

43

38-48

55-64

53

47-61

52

45-60

Sex

    

Women

47

43-52

46

43-51

Men

40

36-43

40

37-44

  1. *Means are back transformed geometrical means from an ANCOVA on the natural logaritm of the sick leave days.
  2. **Numbers for disease group are adjusted for age and numbers for age groups are adjusted for disease group.
  3. ***Numbers for disease group are adjusted for age and sex, numbers for age groups are adjusted for disease group and sex and numbers for sex are adjusted for age and disease group.