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Table 1 Descriptive statistics for each measure of research on GP conducted from 1999–2014

From: Knowledge structure and theme trends analysis on general practitioner research: A Co-word perspective

Periods

Total papers

Total major MeSH terms

Total frequency of major MeSH terms

Total major MeSH terms with high frequency (n, %)

Total frequency of major MeSH terms with high frequency (n, %)

N

1999 to 2003

2453

1362

9492

27 (1.98)

4583 (48.28)

34.57

2004 to 2008

3521

1792

13989

41 (2.29)

7061 (50.47)

39.43

2009–2014

4729

2093

19214

64 (3.06)

10366 (53.95)

41.83

Total

10703

5247

42695

132 (2.52)

22010 (51.76)

——

  1. Note: N is the high-frequency words threshold, words with higher frequency than N were considered high-frequency words