Table 1.

Sample composition by country and demographic characteristics^*

	Australia (n 1033)		Canada (n 1079)		China (n 1099)		India (n 1072)		New Zealand (n 1090)		UK (n 1079)		USA (n 1093)		Total sample (n 7545)
	n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%
Gender
Female	522	51	529	51	537	49	506	47	565	52	549	51	561	51	3790	50
Male	511	49	55	49	562	51	566	53	525	48	530	49	532	49	3755	50
Age (years)
18–34	322	31	311	29	352	32	515	48	324	30	310	29	328	30	2462	33
35–54	348	34	367	34	463	42	360	34	424	39	377	35	371	34	2710	36
55+	363	35	401	37	284	26	197	18	342	31	392	36	394	36	2373	31
Household income
Low	353	34	351	33	51	5	295	28	300	28	351	32	463	43	2164	29
Mid	374	36	534	49	737	67	626	58	462	42	299	28	452	41	3484	46
High	306	30	194	18	311	28	151	14	328	30	429	40	178	16	1897	25

^*Income categories were calculated around the median household income for each country. A bracket around the median of +/–33 % was created, with household incomes falling below or above those figures considered low or high respectively. Worldometer population estimates: Australia 25·5 million; Canada 37·8 million; China 1·4 billion; India 1·4 billion; New Zealand 4·8 million; UK 67·9 million; USA 331 million.