Table 4.

Individual centrality of GP research from 1999–2003

Rank	Major MeSH Terms	Frequency	Percentage (%)	Degree	Betweenness	Closeness
1	Physicians, Family	1759	18.53	2160.00	11.15	26.00
2	Attitude of Health Personnel	463	4.88	871.00	11.15	26.00
3	Family Practice	425	4.48	674.00	11.15	26.00
4	Primary Health Care	275	2.90	415.00	11.15	26.00
5	Physician’s Practice Patterns	233	2.45	444.00	9.77	27.00
6	Physician–Patient Relations	154	1.62	253.00	3.70	33.00
7	Clinical Competence	121	1.27	215.00	2.43	34.00
8	Education, Medical, Continuing	121	1.27	196.00	2.82	33.00
9	Physician’s Role	110	1.16	176.00	4.18	33.00
10	Health Knowledge, Attitudes, Practice	94	0.99	184.00	5.11	30.00
11	Rural Health Services	80	0.84	161.00	3.02	37.00
12	Referral and Consultation	76	0.80	138.00	4.63	31.00
13	Practice Guidelines as Topic	71	0.75	103.00	1.02	38.00
14	Nurse Practitioners	50	0.53	103.00	1.12	37.00
15	Attitude to Health	49	0.52	97.00	1.43	38.00
16	Mass Screening	48	0.51	92.00	1.43	39.00
17	Patient Satisfaction	48	0.51	86.00	0.83	40.00
18	Interprofessional Relations	45	0.47	79.00	3.56	33.00
19	Drug Prescriptions	45	0.47	77.00	1.11	37.00
20	Internship and Residency	44	0.46	88.00	2.22	36.00
21	Communication	42	0.44	94.00	1.52	35.00
22	Specialization	41	0.43	68.00	4.21	33.00
23	Professional Practice Location	39	0.41	103.00	1.29	39.00
24	Job Satisfaction	39	0.41	66.00	0.37	41.00
25	Patient Education as Topic	39	0.41	74.00	2.07	33.00
26	Neoplasms	36	0.38	81.00	2.76	34.00
27	Career Choice	36	0.38	84.00	0.83	39.00