## 3 Results
### Psychosocial Determinants of Work Activity
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \multicolumn{2}{c}{**2017**} & \multicolumn{2}{c}{**SoWD (n = 82)**} & \multicolumn{2}{c}{**WaSaD (n = 212)**} & \multicolumn{2}{c}{**Shift type effect**} \\ \hline  & & **Fixed** & **early** & **fixed** & **daytime** & **Rotating** & **Total** & **\(\chi^{2}\)** & \(p\)** \\ \cline{2-9}  & & **night** & **(n = 33)** & **(n = 49)** & **(n = 126)** & & **Rotating** & **Total** & **\(\chi^{2}\)** & \(p\)** \\ \hline  & Low discomfort & 8 (24.2\%) & 2 (4.1\%) & 38 (30.2\%) & 17 (19.8\%) & 65 (22.1\%) & & & \\ \cline{2-9} Noise & Moderate & 9 (27.3\%) & 11 (22.4\%) & 47 (37.3\%) & 48 (55.8\%) & 115 (39.1\%) & 43.924 & \textless{}0.001 * \\ \cline{2-9}  & High discomfort & 16 (48.5\%) & 36 (73.5\%) & 41 (32.5\%) & 21 (24.4\%) & 114 (38.8\%) & & & \\ \hline  & Low discomfort & 7 (21.2\%) & 3 (6.1\%) & 39 (31.0\%) & 16 (18.6\%) & 65 (22.1\%) & & & \\ \cline{2-9} Vibrations & Moderate & 9 (27.3\%) & 11 (22.4\%) & 47 (37.3\%) & 52 (60.5\%) & 119 (40.5\%) & 49.003 & \textless{}0.001 * \\ \cline{2-9}  & High discomfort & 17 (51.5\%) & 35 (71.4\%) & 40 (31.7\%) & 18 (20.9\%) & 110 (37.4\%) & & & \\ \hline  & Low discomfort & 5 (15.2\%) & 2 (4.1\%) & 29 (23.0\%) & 12 (14.0\%) & 48 (16.3\%) & & & \\ \cline{2-9}  & Moderate & 10 (30.3\%) & 10 (20.4\%) & 56 (44.4\%) & 52 (60.5\%) & 128 (43.5\%) & 44.645 & \textless{}0.001 * \\ \cline{2-9}  & High discomfort & 18 (54.5\%) & 37 (75.5\%) & 41 (32.5\%) & 22 (25.6\%) & 118 (40.1\%) & & & \\ \hline  & Low discomfort & 5 (15.2\%) & 2 (4.1\%) & 30 (23.8\%) & 13 (15.1\%) & 50 (17.0\%) & & & \\ \cline{2-9}  & Moderate & 9 (27.3\%) & 11 (22.4\%) & 54 (42.9\%) & 49 (57.0\%) & 123 (41.8\%) & 39.443 & \textless{}0.001 * \\ \cline{2-9}  & High discomfort & 19 (57.6\%) & 36 (73.5\%) & 42 (33.3\%) & 24 (27.9\%) & 121 (41.2\%) & & & \\ \hline  & **2019** & \multicolumn{2}{c}{**SoWD (n = 94)**} & \multicolumn{2}{c}{**WaSaD (n = 196)**} & \multicolumn{2}{c}{**Shift type effect**} \\ \hline  & & **Fixed** & **Fixed** & **early** & **Fixed** & **daytime** & **Rotating** & **Total** & **\(\chi^{2}\)** & \(p\)** \\ \cline{2-9}  & & **night** & **(n = 36)** & **(n = 58)** & **(n = 117)** & **Rotating** & **(n = 79)** & **Total** & **\(\chi^{2}\)** & \(p\)** \\ \hline  & Low discomfort & 6 (16.7\%) & 5 (8.6\%) & 34 (29.1\%) & 14 (17.7\%) & 59 (20.3\%) & & & \\ \cline{2-9} Noise & Moderate & 14 (38.9\%) & 17 (29.3\%) & 46 (39.3\%) & 44 (55.7\%) & 121 (41.7\%) & 28.085 & \textless{}0.001 * \\ \cline{2-9}  & High discomfort & 16 (44.4\%) & 36 (62.1\%) & 37 (31.6\%) & 21 (26.6\%) & 110 (37.9\%) & & & \\ \hline  & Low discomfort & 6 (16.7\%) & 6 (10.3\%) & 34 (29.1\%) & 13 (16.5\%) & 59 (20.3\%) & & & \\ \cline{2-9} Vibrations & Moderate & 13 (36.1\%) & 16 (27.6\%) & 47 (40.2\%) & 48 (60.8\%) & 124 (42.8\%) & 34.165 & \textless{}0.001 * \\ \cline{2-9}  & High discomfort & 17 (47.2\%) & 36 (62.1\%) & 36 (30.8\%) & 18 (22.8\%) & 107 (36.9\%) & & & \\ \hline  & Low discomfort & 3 (8.3\%) & 5 (8.6\%) & 26 (22.2\%) & 11 (13.9\%) & 45 (15.5\%) & & & \\ \cline{2-9} Temperature at Summer & Moderate & 17 (47.2\%) & 15 (25.9\%) & 54 (46.2\%) & 46 (58.2\%) & 132 (45.5\%) & 29.150 & \textless{}0.001 * \\ \cline{2-9}  & High discomfort & 16 (44.4\%) & 38 (65.5\%) & 37 (31.6\%) & 22 (27.8\%) & 113 (39.0\%) & & & \\ \hline  & Low discomfort & 3 (8.3\%) & 5 (8.6\%) & 28 (23.9\%) & 12 (15.2\%) & 48 (16.6\%) & & & \\ \cline{2-9} Temperature at Winter & Moderate & 16 (44.4\%) & 16 (27.6\%) & 51 (43.6\%) & 44 (55.7\%) & 127 (43.8\%) & 26.426 & \textless{}0.001 * \\ \cline{2-9}  & High discomfort & 17 (47.2\%) & 37 (63.8\%) & 38 (32.5\%) & 23 (29.1\%) & 115 (39.7\%) & & & \\ \hline \end{tabular}  
* \(p<0.05\).  
\end{table} 
Table 4: Perception of environmental discomfort (Frequency (%)) in 2017 and 2019 by shift type and results of Chi-square test for homogeneity comparing shift types.