Table 2.

Questions related to headaches.

Questions	Participant’s number	Scores	Response percentage (%)
Q1: During this last decompression, have you experienced headaches?	34	Yes = 11 No = 23	32 68
Q2: During this last decompression, if you had headache, when did the symptoms declare?	11	Near surface = 6 After surfacing = 5	55 45
Q3: During this last decompression, if you had headache, grade its severity on a scale from 1 (light) to 10 (severe)	10	4 (grades 1 to 2) 6 (grades 6 to 9)	40 60
Q4: Usually, do you experience headache during or after decompression?	34	Never = 14 Sometimes = 10 Often = 5 Always = 5 Sometimes + often = 15	41 29 15 15 44
Q5: Usually, if you had headache, when do the symptoms declare?	16	Near surface = 9 After surfacing = 7	44 56
Q6: Usually, if you had headache, how long does the headache last?	13	Few hours = 3 Half a day = 3 One day = 4 More than 1 day = 3	23 23 31 23
Q7: When back home after a saturation, do people around you say you look pale?	20	Yes = 19 No = 1	95 5