Physical therapy and adjunctive botulinum toxin type A in the treatment of cervical headache: a double-blind, randomised, placebo-controlled study

J Headache Pain · 2002 · PMC3613229

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showed a trendno p-value reported

However, the BTX-A group showed a trend Fig. 2 Number of headache-free days per 4-week period.

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a mild trendno p-value reported

There was no significant difference between the two groups, but in weeks 5-8 a mild trend towards a greater Fig. 1 Headache severity as scored on a visual analogue scale (VAS).

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.