Table 4 Impact of time to treatment on mean time to resolution and duration of attack

Mean ± SD time to resolution

 0 to < 1 h

6

15.6 ± 16.7

155

10.4 ± 12.5

148

7.9 ± 11.0

108

5.4 ± 9.5

 ≥ 1 h

6

10.1 ± 8.4

253

15.0 ± 17.7

201

9.9 ± 12.4

106

15.0 ± 17.4

 P value

n.a.

0.078

0.001

< 0.001

 0 to < 2 h

6

15.6 ± 16.7

228

11.8 ± 13.5

193

8.4 ± 12.0

142

6.5 ± 10.1

 ≥ 2 h

6

10.1 ± 8.4

180

15.0 ± 18.6

156

9.8 ± 11.6

72

17.5 ± 19.2

 P value

n.a.

0.734

0.011

< 0.001

Mean ± SD duration of attack

 0 to < 1 h

6

15.8 ± 16.7

155

10.7 ± 12.5

148

8.1 ± 11.0

108

5.6 ± 9.5

 ≥ 1 h

6

18.7 ± 12.5

253

21.8 ± 22.0

201

14.8 ± 14.2

106

22.4 ± 20.8

 P value

n.a.

< 0.001

< 0.001

< 0.001

 0 to < 2 h

6

15.8 ± 16.7

228

12.3 ± 13.7

193

8.9 ± 12.1

142

6.9 ± 10.2

 ≥ 2 h

6

18.7 ± 12.5

180

24.2 ± 23.8

156

15.8 ± 13.9

72

27.7 ± 22.1

 P value

n.a.

< 0.001

< 0.001

< 0.001