Table 2.

Patient characteristics

Authorref.	Country	Sample size	Mean age (years)	Gender	Ethnicity	No. of co-morbidities/co-existing conditions
Andersen et al.29, 30	Denmark	15	69	Female: 10	NR	NR
				Male: 5
Apps et al.33	UK	15	69	Female: 9	NR	NR
				Male: 6
Brandt35	USA	28	69	Female: 9	Caucasian: 27	NR
				Male: 19	Black/African American: 1
Brien et al.46	UK	34	72	Female: 13	NR	Mean: 3.4
				Male: 21		Min: NR
						Max: NR
Boeckxstaens et al.34	Belgium	7	NR	Female: 3	NR	Mean: 6
				Male: 4		Min: 2
						Max: 9
Chang et al.47	Taiwan	14	71	Female: 2	NR	NR
				Male: 12
Chen et al.31, 32	Taiwan	19	74	Female: 0	NR	NR
				Male: 19
Cicutto et al.41	Canada	42	71	Female: 19	NR	NR
				Male: 23
Duangpaeng et al.36	Thailand	31	NR	NR	Thai: 31	NR
Ehrlich et al.37	Australia	9	69	Female: 5	NR	NR
				Male: 4
Fotokain et al.60	Iran	15	NR	NR	NR	NR
Gysels and Higginson58	UK	18	NR	Female: 11	NR	NR
				Male: 7
Harris et al.38	UK	16	67	Female: 4	NR	NR
				Male: 12
Harrison et al.39	UK	6	75	Female: 4	NR	Mean: 5.5
				Male: 2		Min: 1
						Max: 8
Hillebregt et al.57	The Netherlands	17	NR	NR	NR	NR
Hyde et al.56	Ireland	15	NR	Female: 8	NR	NR
				Male: 7
McCabe et al.40	Ireland	32	67	Female: 17	NR	Reported in percentages by co-morbidities/co-existing conditions
				Male: 15
Panos et al.42	USA	42	65	Female: 0	Caucasian: 30	NR
				Male: 42	African American: 11
					NR: 1
Robinson et al.59	Australia	18	NR	Female: 6	NR	NR
				Male: 12
Sheridan et al.43	New Zealand	29	72	Female: 14	European: 10	Mean: 3
				Male: 15	Pacific Island: 19	Min: 1
						Max: 8
Stellefson et al.44	USA	12	67	Female: 8	Caucasian: 7	NR
				Male: 4	African American: 5
Wong et al.55	Malaysia	18	72	Female: 0	Chinese: 8	NR
				Male: 18	Malay: 7
					Indian: 3
Wortz et al.45	USA	47	68	Female: 22	Caucasian: 41	Mean: 2
				Male: 25	Black: 5	Min: NR
					Other: 1	Max: NR
	Total	499	70	Female: 164	Caucasian: 105	Reported: 5 papers
				Male: 272	Asian: 49	Average mean: 4
				NR: 63	Black/African American: 22	Average min: 1
					Pacific Island: 19	Average max: 8
					“European”: 10	NR: 12 papers
					Other: 1
					NR: 293