Table 3 Descriptives for the different determinants of exposure expressed as hydrogen sulphide index (IN)
Determinants | Number of measurements (shifts) | Median | (min-max) |
|---|---|---|---|
Job type: | |||
Inside big plants | 31 | 0.7 | (0–36.7) |
Pump stations and small plants | 25 | 5.5 | (0–281.0) |
Sewer network | 12 | 0.5 | (0–55.5) |
Collecting sewage from cesspools | 25 | 3.0 | (0–338.6) |
Time of the year | |||
Winter | 26 | 3.4 | (0–281.0) |
Spring | 14 | 0.7 | (0–5.30) |
Summer | 25 | 6.3 | (0–338.6) |
Autumn | 28 | 0.3 | (0–55.5) |
Place: | |||
Capital 1 | 11 | 0.9 | (0–5.0) |
Capital 2 | 11 | 1.0 | (0–7.4) |
Capital 3 | 14 | 0.4 | (0–75.1) |
City 1 | 25 | 0.7 | (0–25.8) |
City 2 | 15 | 4.4 | (0–338.6) |
Rural 1 | 2 | 2.8 | (0–5.5) |
Rural 2 | 8 | 8.4 | (0–177.5) |
Rural 3 | 7 | 13.1 | (3.7–281.0) |
Flushing | |||
No | 34 | 0.6 | (0–55.5) |
Some | 31 | 1.2 | (0–25.8) |
More than 3 times or over 10 min | 28 | 7.6 | (0–338.6) |