Oxygen treatment for cluster headache attacks at different flow rates: a double-blind, randomized, crossover study

Table 3 Results primary and secondary endpoints

	Included (N)	Results (Median+IQR^a)	P-value
% Painfree after treatment (first 2 days)	5	7 L/min: 0 (0–37.50)	0.180^b
% Painfree after treatment (first 2 days)	5	12 L/min: 0 (0–83.50)	0.180^b
Drop in VAS score	56	7 L/min: 4.09 (2.67–5.48)	0.243^b
Drop in VAS score	56	12 L/min: 4.33 (2.71–5.41)	0.243^b
% Successfully treated attacks	56	7 L/min: 92.86 (45.10–100)	0.505^b
% Successfully treated attacks	56	12 L/min: 84.52 (33.33–100)	0.505^b
Patients preference (0–10)	46	3.50 (0.50–5.50)	0.005^c
0 favouring 12 L/min
10 favouring 7 L/min
Patients preference	49	7 L/min: N = 11	0.059^d
7 L/min - 12 L/min - equal		12 L/min: N = 24
7 L/min - 12 L/min - equal		Equal: N = 14
% Painfree after treatment (all attack periods)	55	7 L/min: 28.57 (0–66.67)	0.039^b
% Painfree after treatment (all attack periods)	55	12 L/min: 0 (0–50.00)	0.039^b
Drop on 5-point scale	55	7 L/min: 1.50 (1–2)	0.475^b
Drop on 5-point scale	55	12 L/min 1.50 (1–2)	0.475^b

ISSN: 1129-2377