Table 3

Sickness absence due to respiratory complaints during the 2 year follow up among 251 welders, metal workers, and office workers

n Mean Range
Asthma-like complaints:
 Prevalence (workers (n))46
 Frequency (absence periods (n))841.821–7
 Duration (work days of absence)846.471–23
 Ratio (work days with sickness absence (%))462.690.45–13.0
Complaints of chronic obstructive pulmonary disease:
 Prevalence (workers (n))79
 Frequency (absence periods (n))1221.541–5
 Duration (work days of absence)1228.351–252
 Ratio (work days with sickness absence (%))793.230.23–61.4
Complaints of chronic non-specific lung disease:
 Prevalence (workers (n))88
 Frequency (absence periods (n))1571.781–7
 Duration (work days of absence)1577.631–252
 Ratio (work days with sickness absence (%))883.100.23–61.4