. Author manuscript; available in PMC: 2018 Apr 1.

Published in final edited form as: Am J Ophthalmol. 2017 Jan 17;176:102–107. doi: 10.1016/j.ajo.2017.01.004

Table 7.

Headache Impact Test total scores by group at six and 12 months.

Group	HIT-6 score	St Dev	HIT-6 improvement	P value
ACZ to open-label ACZ	51.70	8.52
	50.80	9.26	−0.90	0.63
PLB to open-label ACZ	53.26	9.31
	49.56	9.40	−3.70	0.01
ACZ tapered off ACZ	46.63	7.80
	45.06	10.62	−1.56	0.56
PLB to no ACZ	47.82	7.37
	48.45	6.33	0.64	0.74

ACZ = acetazolamide, PLB = placebo, HIT-6 = Headache Impact Test