Table 1 Numbers of web pages searched via the Google search engine in June 2015

From: Content and quality of websites supporting self-management of chronic breathlessness in advanced illness: a systematic review

Term

Search results

 

Results (millions)

Results hand-searched

Breathless

19.5

10

Shortness of breath

10.6

77

Dyspnoea

3.4

40

Wheeze

0.72

30

Difficulty breathing

52

10

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