50 Journals with highest impact factor

Fields: Biochemical Research Methods, Biochemistry and Molecular Biology, Biology, Biophysics, Biotechnology and applied Microbiology
Years: 1995-1999
Region: USA

Country	Average # Authors	+/-	% of Papers w/ 3 or more Authors	% of Papers w/ 4 or more Authors	% of Papers w/ 5 or more Authors	# Papers
Vermont	3.667	0.226	0.77	0.49	0.23	81
Wisconsin	3.814	0.129	0.73	0.49	0.29	441
Arizona	3.944	0.199	0.71	0.45	0.30	143
Virginia	3.946	0.436	0.72	0.53	0.34	294
Oklahoma	3.947	0.230	0.78	0.56	0.30	114
Kentucky	3.984	0.212	0.78	0.52	0.36	126
Missouri	3.995	0.246	0.78	0.57	0.35	188
Connecticut	4.029	0.122	0.76	0.53	0.34	620
Georgia	4.128	0.236	0.74	0.53	0.36	329
Michigan	4.160	0.189	0.73	0.54	0.36	811
Kansas	4.165	0.485	0.78	0.59	0.41	85
Oregon	4.186	0.328	0.77	0.56	0.35	295
New Hampshire	4.205	0.686	0.76	0.59	0.40	112
Illinois	4.228	0.175	0.76	0.53	0.34	766
New York	4.233	0.145	0.76	0.55	0.37	2929
Louisiana	4.237	0.237	0.77	0.54	0.35	173
North Carolina	4.249	0.106	0.78	0.56	0.38	1141
California	4.288	0.095	0.77	0.56	0.37	4316
South Carolina	4.289	0.393	0.82	0.63	0.38	90
Indiana	4.290	0.207	0.80	0.56	0.35	359
Nebraska	4.304	0.335	0.77	0.59	0.45	92
Utah	4.306	0.331	0.77	0.58	0.37	216
Minnesota	4.339	0.285	0.77	0.59	0.40	366
Iowa	4.344	0.488	0.79	0.57	0.37	311
Texas	4.359	0.196	0.80	0.61	0.39	1835
Washington	4.404	0.125	0.80	0.59	0.40	1411
Colorado	4.411	0.266	0.76	0.56	0.43	384
Tennessee	4.429	0.393	0.82	0.60	0.42	515
Rhode Island	4.441	0.332	0.78	0.57	0.44	68
New Jersey	4.456	0.334	0.76	0.55	0.39	601
Florida	4.467	0.244	0.77	0.60	0.40	240
New Mexico	4.514	0.431	0.74	0.61	0.45	74
Ohio	4.543	0.233	0.80	0.59	0.41	829
Massachusetts	4.570	0.155	0.79	0.60	0.43	2968
Pennsylvania	4.591	0.158	0.81	0.61	0.43	1490
Maryland	4.704	0.201	0.81	0.64	0.46	2619
Alabama	4.767	0.526	0.80	0.65	0.49	202
Arkansas	4.933	0.386	0.89	0.65	0.51	75