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Table 1 PubMed search results of various query terms related to association studies

From: PADB : Published Association Database

Initial Query

Results

Combined Query Results

  

NOT (odds ratio*)

NOT (relative risk*)

NOT (hazard ratio*)

NOT (risk ratio*)

NOT (case-control)

NOT (cohort*)

NOT (associa*)

odds ratio*

67,815

-

65,047

66,898

67,238

50,804

56,612

24,427

relative risk*

32,280

29,512

-

31,944

31,830

27,878

24,374

14,907

hazard ratio*

8,927

8,110

8,591

-

8,868

8,598

5,848

3,548

risk ratio*

3,694

3,117

3,244

3,535

-

3,377

2,814

1,841

case-control

92,264

75,253

87,862

91,935

91,947

-

83,109

50,155

cohort*

129,128

117,925

121,222

126,049

128,248

119,973

-

75,875

associa*

1,591,541

1,548,153

1,574,168

1,586,162

1,589,688

1,549,432

1,538,288

-

  1. The search results for various keywords related to association studies in PubMed seldom overlap. The search for 'odds ratio*' in PubMed retrieved 67,815 abstracts when accessed on 30 November 2006. Among these, 65,047 (95.9%), 66,998 (98.7%) and 67,238 (99.2%) abstracts did not contain 'relative risk*', 'hazard ratio*' or 'risk ratio*', respectively. Moreover, 50,804 (74.9%) and 56,612 (83.5%) abstracts did not contain 'case-control' or 'cohort*', respectively. By comparison, 75,253 (81.6%) abstracts out of 92,264 containing 'case-control' and 117,925 (91.3%) abstracts out of 129,128 containing 'cohort*' did not contain 'odds ratio*'.