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Table 1 Patient demographics: Response rate, age and SMA-related characteristics

From: Disease burden of spinal muscular atrophy in Germany

 

SMA subtype

Total

I

II

III

Response rate

 

 Total patient number

265

20

115

130

 Enrolled respondents

189

12

73

104

 Response rate [%]

71

60

63

80

 Ratio of patients/parents among respondents [%]

52/48

0/100

30/70

74/26

Age of enrolled patients

 

 Min. [years]

0

0

2

2

 Max. [years]

73

7

56

73

 Median [years]

19

1

11

33

Current motor function

    

 N

177

9

69

99

 Walk [%]

33

0

0

59

 Sit [%]

47

11

65

38

 None [%]

20

89

35

3

Wheelchair use

    

 N

154

4

51

99

 Always [%]

61

50

100

41

 Sometimes [%]

14

0

0

21

 None [%]

25

50

0

37

Feed tube use

    

 N

177

9

69

99

 Yes [%]

6

22

10

1

 No [%]

94

78

90

99

Spine surgery

    

 N

176

9

68

99

 Yes [%]

23

0

22

8

 No [%]

153

100

78

92

Non-invasive ventilation

    

 N

174

9

69

96

 Always [%]

1

0

1

0

 Sometimes [%]

12

22

22

4

 None [%]

87

78

77

96

Invasive ventilation

    

 N

174

8

69

97

 Always [%]

1

13

0

0

 Sometimes [%]

0

0

0

0

 None [%]

99

88

100

100

  1. Differentiation by SMA subtypes (I = Werdnig-Hoffmann, II = intermediate, III = Kugelberg-Welander). This differentiation into subtypes is used for all following tables and figures. SMA-related characteristics of enrolled patients (motor function, spine surgery, use of wheelchair, feed tube use and ventilation) originate from the German SMA registry at the time of execution. Because of rounding, percentages might not add up to exactly 100 %. N = number of patients