Table 7 Prevention of drug use
From: Analysis of risk factors for medication-overuse headache relapse: a clinic-based study in China
Application time of prevention drug | Case group (n = 27) | Control group (n = 59) | χ 2 | P |
|---|---|---|---|---|
< 6 months | 11 (40.74 %) | 9 (15.25 %) | 6.742 | 0.009 |
> 6 months | 16 (59.26 %) | 50 (84.75 %) |