## 4 Research Results
### Analysis of Survey Data  
From 1500 people working on the examined 120 construction sites, 573 employees took part in the study. This was 38.3% of the people employed in the examined construction enterprises. The researchers tested 120 facade scaffoldings. The facade scaffoldings were divided into four groups with regards to the surface area: 30-300 m\({}^{2}\) (55 scaffolding), 300-600 m\({}^{2}\) (28 scaffolding), 600-900 m\({}^{2}\) (25 scaffolding), and 900--1500 m\({}^{2}\) (12 scaffolding). Figures 6-9 show examples of tested scaffoldings with regards to the surface area. \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multirow{2}{*}{**No.**} & \multirow{2}{*}{**Severity**} & \multirow{2}{*}{**Content of Alcohol**} & \multicolumn{2}{c}{**Scenario 1**} & \multicolumn{4}{c}{**Scenario 2**} \\  & & & **in Blood** & & **Time** & **Number of** & **Time** & **Number of** & **(b)** & **(c)** \\  & & & & **Beers** & & **Time** & **Number of** & **Time** & **Number of** \\  & & & & **Beers** & & **Beers** & & **Beers** & **Beers** \\ \hline () & () & () & () & () & () & () & () & () & () & () \\ \hline  
(>\)10 & 510 & 7 & 330 & 6 & 150 & _im_ \\
22 & S & 0.63 & 610 & 5 & 10 & _im_ & - & - & - \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Estimated numbers of consumed alcoholic beverages (“large beers”) (own elaboration). Table 3 presents the obtained socio-demographic information on the respondents. Figure 10 shows the age structure of the respondents. The employment structure is as follows:  
* The largest group of respondents were employees aged 30-39, and they represented 36.5% of all the respondents. They were mainly employees with average experience who had worked for at least 10 years in their profession. * The second group was made up of young employees aged 20-29 (31.1%), with a much shorter seniority, ranging from several days to a maximum of 10 years. * Other respondents were experienced employees with more than 15 years of work experience at the age of 40-49 (17.8%) and 50-59 (9.2%), several employees over the age of 60 who were often at retirement age (3.1%), and adolescent employees (2.3%). \begin{table}
\begin{tabular}{c c c c} \hline \hline \multicolumn{4}{c}{**Age of Employee**} \\ \hline
**Age Range** & **Number of People** & **Percentage** & \(p\) \\ \hline
18–19 & 13 & 2.3\% & \\
20–29 & 178 & 31.1\% & \\
30–39 & 209 & 36.5\% & \\
40–49 & 102 & 17.8\% & \textless{}0.01 \\
50–59 & 53 & 9.2\% & \\ \textgreater{}60 & 18 & 3.1\% & \\ \hline \hline \multicolumn{4}{c}{**Marital Status**} \\ \hline Marital Status & Number of People & Percentage & \(p\) \\ \hline Single & 251 & 43.8\% & \\ Married & 304 & 53.1\% & \\ Divorced & 11 & 1.9\% & \textless{}0.01 \\ Widower & 7 & 1.2\% & \\ \hline \hline \multicolumn{4}{c}{**Permanent Residence**} \\ \hline Place & Number of People & Percentage & \(p\) \\ \hline A city of over 100,000 residents & 179 & 31.2\% & \\ A small town with up to 100,000 residents & 204 & 35.6\% & \textless{}0.01 \\ Village & 190 & 33.2\% & \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Socio-demographic information (own elaboration). Figure 9: Example of facade scaffold with an area of 900–1500 m\({}^{2}\) (authors’ archive). The majority of the respondents were married (53.1% of all respondents), or bachelors (43.8%), 35.6% of whom indicated small towns as their place of permanent residence (up to 100,000 inhabitants), 33.2% of whom lived in villages, and 31.2% of whom lived in cities (over 100,000 inhabitants) (\(p<0.01\)). Figure 11 shows the obtained survey data concerning the consumption of alcohol by 573 construction employees who worked on the 120 assessed construction scaffoldings. A total of 274 people (i.e., 47.8% of surveyed employees) declared that they consumed alcohol during the day, while the remaining 299 people (52.2%) declared that they had never consumed alcohol, or had consumed alcohol, but not during the last 12 months. During the research, no employee declared alcohol abuse, alcoholism, or alcohol consumption at work.