Bibliometric analysis of worldwide publications on multi-, extensively, and totally drug – resistant tuberculosis (2006–2015)

Table 4 Productivity of top ten active countries stratified by population size and GDP

SCR	Country	Frequency	% N = 2260	Number of population in millions	Number of articles per 100 million population^a(R)	GDP in trillions	Number of articles per one trillion GDP^b (R)
1^st	USA	517	22.88	321.4	160.86 (7)	17.95	28.80 (9)
2^nd	India	269	11.90	1311	20.52 (9)	2.074	131.41 (3)
3^rd	S. Africa	229	10.13	54.96	416.67 (2)	0.3128	731.63 (1)
4^th	UK	186	8.23	65.14	285.54 (3)	2.849	65.29 (4)
5^th	China	158	6.99	1371	11.52 (10)	10.87	14.54 (10)
6^th	France	122	5.40	66.81	182.61 (5)	2.422	50.37 (7)
7^th	Switzerland	117	5.18	8.287	1411.85 (1)	0.6647	175.94 (2)
8^th	S. Korea	102	4.51	50.81	200.79 (4)	1.929	55.19 (5)
9^th	Italy	100	4.42	60.80	164.47 (6)	1.815	55.10 (6)
10^th	Germany	91	4.03	81.41	111.78 (8)	3.356	27.12 (8)

SCR Standard competition rank
USA United States of America
UK United Kingdom
S. Africa South Africa
S. Korea South Korea
R rank
GDP Gross Domestic Product
MDR, XDR, and TDR-TB multi-, extensively, and totally drug resistant tuberculosis
^acalculated by dividing number of publications for a particular country by its population size then multiplying by 100
^bcalculated by dividing the number of publications of a particular country by its GDP in trillions

ISSN: 2049-6958