Study

Sample size

Age, year, mean (SD)

Male, N

Multi-level, N

Delayed treatment, days, mean (SD)

Epidural abscess, N

Asamoto [4]

27

56

15

2

-

17

Ascione [5]

30

64

13

0

48

-

Bernard [6]

359

61

250

39

34

-

Bettini [7]

56

47.8

21

6

50

3

Cervan [8]

23

67

15

2

49

14

ChinPea [9]

48

66.8

19

0

120

35

Hoh [10]

24

59

13

-

-

-

Dimar [11]

42

60

29

2

14.4

1

Dragsted [12]

65

60

45          3

6

384

46

Kim [13]

355

60

211

83

-

355

Elsaid [14]

19

43.8

12

0

11.7

15

Erick [15]

110

60

67

12

39

-

Gupta [3]

260

67

163

0

32

158

Hadj- pavlou [16]

101

46

76

0

-

39

Heyde [17]

20

59.7

9

3

90

12

Karadimas [18]

163

56

101

141

48

-

Lee [19]

51

60

32

17

-

28

Livorsi [20]

35

53

30

13

-

26

Martin Mc. [21]

253

60

160

20

54

43

Masuda [22]

5

63.8

2

0

62

2

Matsubara [23]

52

70

31

0

-

30

Mavro-genis [24]

153

57

93

3

-

-

Nolla [25]

64

59

36

3

48

39

Ozkan [26]

21

65

12

1

-

-

Robach [27]

135

59

85

0

-

46

Rosinsky [28]

16

68

9

2

10

2

Schinkel [29]

32

61

18

5

44

19

Schuster [30]

47

49

33

12

-

33

Shiban 1 [31]

113

65

78

28

-

33

Shiban 2 [32]

25

66

14

0

-

11

Shousha [33]

30

64.5

19

11

-

24

Siddiq [34]

57

56

33

27

-

57

Sobottke [35]

32

74.9

21

12

65

12

Curry [36]

48

61

30

1

7

48

Urrutia [37]

102

65

74

34

-

11

Valacius [38]

196

59

106

12

52

60

Woergen [39]

62

64

35

14

-

8

Yoshimoto [40]

45

65

-

2

-

-

Zarrouk [41]

29

58

-

4

29

19

Dennis [42]

84

62

49

47

-

-