Table 5.

Qualitative Support for HIT‐6 Item 3 (Limits to Concentration)

Author/Year	Population (n)	Qualitative Support
Hareendran et al, 201723	Migraine (17)	“… because, uh, when I have a migraine, when I had the last migraine, I still had to do activities or maybe I was in church and I needed to concentrate – I could, but if I'm having a migraine it's very difficult to sit there – and I don't even want to hear anyone talk, I just want to be in a dark room, lying down”
Hartmaier et al, 199534	Migraine (82)	Migraine impairments were generated from 6 one‐on‐one interviews with migraine patients. Presented to 76 new patients to indicate if they experienced an impairment or not and to rate impairments for importance, “concentration” was experienced by 92% and had a mean importance of 4.12 on a 1‐5 scale
Leiper et al, 200640	Chronic headache (59)	“Several people found it hard to concentrate when suffering headaches …”
		“… you can't think clearly and you look at a sheet of paper and try and read it and you're not taking it in …”
Mannix et al, 201636	Migraine (literature review/9 articles)	“… being unable to do activities requiring concentration (n = 25, 78%) or clear thinking (n = 23, 72%) …”
Ruiz de Velasco et al, 200338	Migraine (29)	“At school, you can't study, you're in class but you can't concentrate, you're reading but you can't focus on what you're reading …”
Tenhunen and Elander, 200541	Chronic daily headache (9)	“I'm lacking concentration and I'm so tired that I can't speak”
		“… it's difficult to concentrate on reading, I'm falling asleep all the time and things don't seem to stay in my memory”

Italics indicate direct interviewee quote reported in publication.