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Table 7 Cross classification of tenderness (left) by tenderness (right) scores

From: Paranasal sinus air suction for immediate pain relief of acute migraine – a randomized, double blind pilot study

Tenderness (left) score

Tenderness (right) score

2

4

6

8

10

0

0

0

0

1

0

4

0

0

0

2

0

6

0

0

1

7

2

8

1

1

5

6

3

9

0

0

0

0

1

10

0

0

3

9

8