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Table 2 Numbers (%) of improved and deteriorated patients

From: Estimating the number needed to treat from continuous outcomes in randomised controlled trials: methodological challenges and worked example using data from the UK Back Pain Exercise and Manipulation (BEAM) trial

 

Improved

Stable

Deteriorated

Three months

      

Best care

      

5 point reduction

62

(24)

181

(70)

13

(5)

30% change

125

(49)

99

(39)

32

(13)

Exercise

      

5 point reduction

82

(36)

138

(61)

5

(2)

30% change

135

(60)

81

(36)

9

(4)

Spinal manipulation

      

5 point reduction

125

(44)

148

(52)

14

(5)

30% change

193

(67)

63

(22)

31

(11)

Exercise and spinal manipulation

      

5 point reduction

117

(45)

135

(52)

7

(3)

30% change

185

(71)

61

(24)

13

(5)

12 months

      

Best care

      

5 point reduction

84

(34)

148

(60)

16

(6)

30% change

139

(56)

82

(33)

27

(11)

Spinal manipulation

      

5 point reduction

125

(46)

133

(49)

15

(5)

30% change

187

(68)

62

(23)

24

(9)

Exercise and spinal manipulation

      

5 point reduction

115

(45)

133

(52)

9

(4)

30% change

180

(70)

57

(22)

9

(4)