Table 2.

A number of papers by countries as study settings.

No.	Country Settings	Frequency	%	No.	Country Settings	Frequency	%
1	United States	271	21.1%	31	Sweden	8	0.6%
2	South Africa	108	8.4%	32	Zambia	8	0.6%
3	India	74	5.8%	33	Cambodia	7	0.5%
4	Brazil	60	4.7%	34	Ghana	7	0.5%
5	China	60	4.7%	35	Lesotho	7	0.5%
6	Uganda	52	4.0%	36	Netherlands	7	0.5%
7	Canada	42	3.3%	37	Swaziland	7	0.5%
8	Thailand	32	2.5%	38	Switzerland	7	0.5%
9	United Kingdom	30	2.3%	39	Hong Kong	6	0.5%
10	Australia	29	2.3%	40	Jamaica	6	0.5%
11	Ethiopia	27	2.1%	41	Japan	6	0.5%
12	Niger	25	1.9%	42	Nepal	6	0.5%
13	Nigeria	25	1.9%	43	Germany	5	0.4%
14	Malawi	21	1.6%	44	Mexico	5	0.4%
15	Viet Nam	20	1.6%	45	Peru	5	0.4%
16	Ireland	19	1.5%	46	Wallis and Futuna	5	0.4%
17	Taiwan	18	1.4%	47	Colombia	4	0.3%
18	Rwanda	17	1.3%	48	Georgia	4	0.3%
19	Kenya	15	1.2%	49	Haiti	4	0.3%
20	Iran	14	1.1%	50	Jersey	4	0.3%
21	Spain	14	1.1%	51	Portugal	4	0.3%
22	Tanzania	14	1.1%	52	Romania	4	0.3%
23	Zimbabwe	14	1.1%	53	Singapore	4	0.3%
24	Malaysia	13	1.0%	54	Burkina Faso	3	0.2%
25	Cameroon	12	0.9%	55	Democratic Republic of the Congo	3	0.2%
26	Italy	12	0.9%	56	Republic of the Congo	3	0.2%
27	France	11	0.9%	57	Finland	3	0.2%
28	Botswana	9	0.7%	58	Guinea	3	0.2%
29	Indonesia	9	0.7%	59	Lebanon	3	0.2%
30	Puerto Rico	8	0.6%	60	Mali	3	0.2%