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Table 1 Gender and indication of sample

From: Randomised controlled comparison of the Health Survey Short Form (SF-12) and the Graded Chronic Pain Scale (GCPS) in telephone interviews versus self-administered questionnaires. Are the results equivalent?

  Mean Age (SD); Median Migraine (%) Tension-type headache (%) Mixed diagnosis: Migraine/tension-type headache (%) Total (%)
Male 55.8 (13.5) 58.4 44 (5.4) 110 (13.4) 5 (0.6) 159 (19.3)
Female 50,7 (14.2), 50.8 258 (31.3) 384 (46.6) 22 (2.7) 664 (80.7)
Total 51.7 (14.2); 51.6 302 (36.7) 494 (60.0) 27 (3.3) 823 (100.0)