Scientometric trends and knowledge maps of global health systems research

Table 4 Top 25 most productive institutions during 1900–2012

No.	Institution	1900–1990	%	1991–2000	%	2001–2012	%	1900–2012	%	TLCS	TGCS	AGCS
1	Harvard Univ	17	2.64	120	2.13	631	2.80	768	2.67	1,735	18,732	24.39
2	Univ Toronto	2	0.31	89	1.58	464	2.06	555	1.93	503	7,362	13.26
3	Univ Washington	8	1.24	72	1.28	398	1.77	478	1.66	602	9,677	20.24
4	Univ Michigan	7	1.09	65	1.15	396	1.76	468	1.63	684	9,781	20.90
5	Univ Calif San Francisco	7	1.09	82	1.46	349	1.55	438	1.52	770	11,175	25.51
6	Univ Calif Los Angeles	8	1.24	95	1.69	313	1.39	416	1.45	718	11,168	26.85
7	WHO	3	0.47	43	0.76	285	1.27	331	1.15	1,121	9,141	27.62
8	Univ N Carolina	8	1.24	68	1.21	248	1.10	320	1.11	259	4,303	13.45
9	Johns Hopkins Univ	8	1.24	64	1.14	247	1.10	319	1.11	689	8,105	25.41
10	Columbia Univ	8	1.24	28	0.50	257	1.14	289	1.00	425	5,884	20.36
11	Univ Penn	2	0.31	54	0.96	232	1.03	288	1.00	392	5,069	17.60
12	Ctr Dis Control & Prevent	0	0.00	46	0.82	235	1.04	281	0.98	465	7,431	26.44
13	Stanford Univ	5	0.78	55	0.98	218	0.97	278	0.97	408	6,584	23.68
14	Yale Univ	6	0.93	38	0.68	221	0.98	265	0.92	306	5,009	18.90
15	Boston Univ	6	0.93	30	0.53	222	0.99	258	0.90	375	6,230	24.15
16	Duke Univ	0	0.00	35	0.62	222	0.99	258	0.90	274	4,858	18.83
17	McMaster Univ	3	0.47	53	0.94	205	0.91	255	0.89	260	3,351	13.14
18	Univ Sao Paulo	0	0.00	47	0.84	237	1.05	253	0.88	101	975	3.85
19	Univ British Columbia	4	0.62	47	0.84	216	0.96	248	0.86	181	3,325	13.41
20	Sch Hyg & Trop Med	1	0.16	25	0.44	236	1.05	244	0.85	637	4,571	18.73
21	Minist Hlth	1	0.16	43	0.76	194	0.86	237	0.82	400	2,977	12.56
22	Univ Pittsburgh	1	0.16	35	0.62	197	0.88	233	0.81	242	5,263	22.59
23	Univ Sydney	1	0.16	25	0.44	198	0.88	223	0.77	153	2,633	11.81
24	McGill Univ	2	0.31	28	0.50	178	0.79	208	0.72	127	2,897	13.93
25	Karolinska Inst	1	0.16	25	0.44	179	0.80	204	0.71	165	2,345	11.50
26	Total	116	17.98	1,370	24.34	7,114	31.60	8,516	29.58	12,453	164,858	19.36

TLCS, Total local citation score, which is the number of times cited by other papers in the local collection; TGCS, Total global citation score, which is the citation frequency based on the full WoS count at the time the data was downloaded; AGCS, Average citation frequency of an article.

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