Table 2.

Distribution of Environmental and Occupational Factors Among the Ahsa Population

Factor	Number	Prevalence (%)
Exposure to Air Pollution
PM (Particulate Matter)	123	60%
NO2 (Nitrogen Dioxide)	51	25%
SO2 (Sulfur Dioxide)	82	40%
O3 (Ozone)	91	45%
CO (Carbon Monoxide)	61	30%
Low Humidity Environments	133	55%
Prolonged VDT Use	143	65%
Occupational Exposures
Dust and Wind	101	50%
Chemical Irritants	91	45%
Protective Measures Used	141	70%

Note: VDT refers to the use of computer screens or other display terminals for extended periods.