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Table 1 Demographic data

From: Contamination by respiratory viruses on outer surface of medical masks used by hospital healthcare workers

Variables Number (n = 148) Percent
Hospital
 Hospital A 77 52.0
 Hospital B 26 17.6
 Hospital C 45 30.4
Ward
 Internal medicine 52 35.1
 Respiratory 70 47.3
 Pediatrics 26 17.6
Position
 Doctor 68 45.9
 Nurse 80 54.1
Age
  ≤ 30 year 41 27.7
 31–40 years 68 45.9
  ≥ 41 years 39 26.4
Gender
 Male 27 18.2
 Female 121 81.8
Type of mask normally used in the hospital
 Cloth re-usable facial masks 2 1.4
 Disposable medical masks 146 98.6
Number of masks routinely used in the hospital
 1 46 31.1
 2 88 59.5
 3 10 6.8
 4 4 2.7
When masks are normally used
 All the time 101 68.2
 When treating certain patients 47 32.8