## 3 Results
### Probability of Abnormal IA Exposure and Employees' Experience
\begin{table}
\begin{tabular}{c c c c c c} \hline
**Question on** & **Unlikely** & **Possible** & **Likely** & **Very Likely** & **FIGH’s** \\
**Psychosocial Work** & **n = 61** & **n = 619** & **n = 763** & **n = 118** & **Reference** \\
**Environment** & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** & **Value** \\ \hline \multicolumn{6}{l}{Do you regard your work as interesting and stimulating?} \\ \hline Yes, often & 52 (88.1) & 540 (87.5) & 684 (89.9) & 102 (86.4) & _82_ \\ Yes, sometimes & 7 (11.9) & 66 (10.7) & 61 (8.0) & 11 (9.3) & _16_ \\ No, seldom or rarely & 0 (0) & 11 (1.8) & 16 (2.0) & 5 (4.2) & \(0\) \\ \hline \multicolumn{6}{l}{Do you have too much work?} \\ \hline Yes, often & 12 (20.7) & 95 (15.5) & 98 (12.9) & 15 (12.7) & _20_ \\ Yes, sometimes & 36 (62.1) & 360 (58.7) & 489 (64.4) & 71 (60.2) & 64 \\ No, seldom or rarely & 10 (17.2) & 158 (25.8) & 172 (22.7) & 32 (27.1) & _16_ \\ \hline \multicolumn{6}{l}{Do you have opportunities to influence your working conditions?} \\ \hline Yes, often & 38 (32.8) & 120 (19.5) & 161 (21.2) & 38 (32.8) & _21_ \\ Yes, sometimes & 61 (52.6) & 335 (54.3) & 379 (49.9) & 61 (52.6) & _51_ \\ No, seldom or rarely & 17 (14.7) & 162 (26.3) & 220 (29.0) & 17 (14.7) & _28_ \\ \hline \multicolumn{6}{l}{Do your fellow workers help you with work-related problems?} \\ \hline Yes, often & 33 (55.9) & 463 (75.2) & 569 (74.8) & 83 (70.3) & 79 \\ Yes, sometimes & 24 (40.7) & 129 (20.9) & 171 (22.5) & 28 (23.7) & 19 \\ No, seldom or rarely & 2 (3) & 24 (3.9) & 21 (2.8) & 7 (5.9) & \(2\) \\ \hline \multicolumn{6}{l}{Do you feel stress?} \\ \hline Quite a lot or very much & 15 (26.3) & 92 (15.1) & 105 (15.0) & 16 (14.0) & _10_ \\ Some & 12 (21.1) & 181 (29.7) & 243 (32.4) & 40 (35.1) & _28_ \\ Not at all or just a little & 30 (52.6) & 337 (55.2) & 403 (53.7) & 58 (50.9) & 63 \\ \hline \end{tabular}
\end{table} 
Table 4: Perceived psychosocial work environment and stress according to probability of abnormal IA exposure categories (_unlikely, possible, likely, very likely_). \begin{table}
\begin{tabular}{c c c c c} \hline
**IAQ-Related Health Information** & **Unlikely** & **Possible** & **Likely** & **Very likely** \\
**IAQ-Related Health Information** & **n = 2** & **n = 16** & **n = 20** & **n = 5** \\
**(\%)** & **(\%)** & **(\%)** & **(\%)** & **(\%)** \\ \hline \multicolumn{6}{l}{Some employees have new asthma or aggravation of previous asthma 1 **} \\ \hline Yes & 2 (100) & 5 (31) & 5 (25) & 3 (60) \\ No & 0 (0) & 10 (63) & 14 (70) & 2 (40) \\ No information & 0 (0) & 1 (6) & 1 (5) & 0 (0) \\ \hline \multicolumn{6}{l}{Some employees have changed work premises or work places due to IAQ-related symptoms 1 } \\ \hline Yes & 1 (50) & 4 (25) & 4 (20) & 2 (40) \\ No & 1 (50) & 11 (69) & 16 (80) & 3 (60) \\ No information & 0 (0) & 1 (6) & 0 (0) & 0 (0) \\ \hline \multicolumn{6}{l}{The amount of employee contacts with OHS due to IAQ-related issues has increased 1} \\ \hline Yes & 2 (100) & 5 (31) & 5 (25) & 3 (60) \\ No & 0 (0) & 10 (63) & 10 (50) & 2 (40) \\ No information & 0 (0) & 1 (6) & 0 (0) & 0 (0) \\ \hline \multicolumn{6}{l}{The amount of sickness absence due to respiratory symptoms has increased 1} \\ \hline Yes & 1 (50) & 4 (25) & 8 (40) & 1 (20) \\ No & 0 (0) & 7 (44) & 11 (55) & 3 (60) \\ No information & 1 (50) & 5 (31) & 1 (5) & 1 (20) \\ \hline \end{tabular}
\end{table} 
Table 5: IAQ-related group-level health information on employees (obtained from OHS), according to building floors or sections in which probability of abnormal IA exposure categories (_unlikely, possible, likely, very likely_) were assessed. The results show a statistical association between detected MMVF sources in ventilation systems and perceived work environment-related symptoms and a statistical association between ventilation system age and perceived work environment-related symptoms (Table 6).