a significant trendP = 0.008
The Cochran–Armitage trend test revealed a significant trend of a higher prevalence of VA in the order of STTH, N-STTH, and NMNT headache ( P = 0.008) ( Fig. 2 ).
The Cochran–Armitage trend test revealed a significant trend of a higher prevalence of VA in the order of STTH, N-STTH, and NMNT headache ( P = 0.008) ( Fig. 2 ).