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Table 1 Variables and definition

From: Which preventive measures might protect health care workers from SARS?

Variable name Definition
Socio-demographics  
Age Year
Gender 1 = Male, 2 = Female
Marital status 1 = Unmarried, 2 = Married, 3 = Others
Educational level 1 = Senior school, 2 = Technical secondary school, 3 = Junior college, 4 = university, 5 = Master degree, 6 = PhD
Professional title 1 = Doctor, 2 = Nurse, 3 = Health attendant, 4 = Technician in laboratory, 5 = Others
Department 1 = SARS ward, 2 = Emergency department/Fever clinic, 3 = Infectious disease, 4 = Respiratory disease, 5 = Others
Use of personal protective and control measures  
Number of gowns worn 0 = Single, 1 = Double
Number of multilayered cotton mask worn 0 = Single, 1 = Double
Number of pairs of gloves worn 0 = Single, 1 = double
Frequency of wearing shoe cover 0 = Never, 1 = Sometimes, 2 = Often, 3 = Every time
Frequency of wearing cap 0 = Never, 1 = Sometimes, 2 = Often, 3 = Every time
Frequency of face shield in SARS ward 0 = Never, 1 = Sometimes, 2 = Often, 3 = Every time
Frequency of wearing goggles while performing operation for SARS patients 0 = Never, 1 = Sometimes, 2 = Often, 3 = Every time
Health-related behaviors  
Frequency of washing uncovered skin after caring for SARS patients 0 = Never, 1 = Sometimes, 2 = Often, 3 = Every time
Frequency of washing hands after caring for SARS patients 0 = Never, 1 = Sometimes, 2 = Often, 3 = Every time
Frequency of washing nasal cavity after caring for SARS patients 0 = Never, 1 = Sometimes, 2 = Often, 3 = Every time
Frequency of washing oral cavity after caring for SARS patients 0 = Never, 1 = Sometimes, 2 = Often, 3 = Every time
SARS patient care  
Special training for SARS 0 = No, 1 = Yes
Performing tracheotomy 0 = No, 1 = Yes
Performing tracheal intubations 0 = No, 1 = Yes
Caring for "Super Spreading Patient" 0 = No, 1 = Yes
Avoiding face to face while caring for patient 0 = Never, 1 = Sometimes, 2 = Often, 3 = Every time
Other relevant control measures  
Method of air ventilation in offices and SARS wards 1 = Artificial central ventilation (windows were closed in wards), 2 = Natural ventilation (windows were opened in wards), 3 = Natural ventilation and additional electronic exhaust fan (windows were opened in wards, at the same time, electronic exhaust fans were used for improving air circulation in wards)
Type of equipment for washing hands 1 = Automatic tap, 2 = Non-automatic tap, 3 = Others