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Table 2 Pain Score of Subjects at Different Time Intervals Based on Visual Analogue Scale

From: Comparison of the efficacy of intranasal ketamine versus intravenous ketorolac on acute non-traumatic headaches: a randomized double-blind clinical trial

Time

Ketamine (n = 70)

Ketorolac (n = 70)

 

Mean ± SD

Median (IQR)

Mean ± SD

Median (IQR)

P value

On arrival

8.00 ± 1.1

8.0 (2.0)

9.01 ± 0.7

9.0 (3.0)

< 0.001

30

3.47 ± 0.5

3.0 (1.0)

4.98 ± 0.7

5.0 (0.0)

< 0.001

60

2.07 ± 0.2

2.0 (0.0)

2.42 ± 0.7

2.0 (1.0)

< 0.001

120

1.10 ± 0.3

1.0 (0.0)

1.00 ± 0.0

0.0 (0.0)

< 0.001

Pain reduction until 30th minute

4.53 ± 1.25

4.5 (4,5)

4.03 ± 0.98

4 (3,5)

0.003

Pain reduction until 60th minute

5.93 ± 1.15

6 (5,7)

6.58 ± 1.03

7 (6,7)

0.005

Pain reduction until 120th minute

6.9 ± 1.22

7 (6,7)

8.01 ± 0.69

8 (8,8)

< 0.001

Pain reduction 60 to 120th minute

0.97 ± 0.42

1 (1,1)

1.43 ± 0.69

1 (1,2)

< 0.0001

  1. SD = standard deviation; IQR = interquartile