Table 2

Demographic features of the study population per building

Building
ABCDE
Target population233224140258276
Unavailable (%)15  (6.4)23  (10.2)3 (2.1)17  (6.6)30  (10.9)
Sick or on holiday (%)32 (13.7)8 (3.6)8 (5.7)13 (5.0)12 (4.4)
Refused (%)1 (0.4)1 (0.4)17 (12.1)1 (0.4)3 (1.1)
Study population (%)185 (79.4)192 (85.7)112 (80.0)227 (88.0)231 (83.7)
Male (%)109 (58.9)103 (53.6)43 (38.4)137 (60.4)87 (37.7)
Age (mean y)30.730.539.138.237.8
Smokers %19.520.714.226.617.3
Ex-smokers %20.010.923.513.415.8
Non-smokers %60.558.462.360.066.9
Employed in building (y)1.33.01.56.26.1