BioMed Research International / 2014 / Article / Tab 6

Research Article

A Cohort Study on Self-Reported Respiratory Symptoms of Toner-Handling Workers: Cross-Sectional and Longitudinal Analysis from 2003 to 2008

Table 6

Relationship between %FEV1.0 and breathlessness.

1st survey2nd survey3rd survey4th survey5th survey6th survey

Toner-handling group24 (21.6%)7 (8.1%)11 (15.1%)6 (9.1%)9 (15.3%)8 (14.8%)
Never-toner-handling group2 (9.1%)4 (25.0%)0 (0.0%)1 (7.7%)2 (20.0%)1 (14.3%)

value of chi-square test; and .
The percentage in the table was calculated by the following formula; the number of subjects with < 80% * 100/the number of subjects with breathlessness.

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