A total of 51 respondents were handed out the questionnaires.
The respondents rate responded to the questionnaires are PPAP, PKBF and PMA were 84%, 69% and 83%, respectively.
The socio demographic information was derived from the questionnaires by the respondents in there selected buildings as tabulated in Table 1. The proportions of male and female respondents were almost equivalent for PPAP and PMA buildings.
The mean age of respondents was 39.5 years in PPAP, 35 years in PKBF and 39 years PMA. The mean number of hours per week respondents spent in the buildings was 39.22h, 35h and 39h, respectively