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. 2021 Sep 19;94(1127):20210505. doi: 10.1259/bjr.20210505

Table 4.

Comparison of results with some related studies

Authors Year Sample size Positive cases %
Burdan et al3 2013 842 75 8.9
Paulsen et al7 1994 500 23 4.6
Park et al8 2010 1268 27 2.1
Langdown et al19 2005 3535 54 1.5
Kuhn et al20 2017 1100 total
1000 adult		 132 13.2