Reference

Description

Results

Loeb et al., 2004

Retrospective cohort study of 43 nurses working with SARS patients in Toronto critical care units

Risk of acquiring SARS based on use of PPE:

  • Gown: RR = 0.36 (95% CI 0.10 to 1.24, p = 0.12)

  • Gloves: RR = 0.45 (95% CI 0.14 to 1.46, p = 0.22)

  • N95 (respirator at least once) or surgical mask: RR = 0.23 (95% CI 0.07 to 0.78, p = .02)

  • N95: RR = 0.22 (95% CI 0.05 to 0.93, p = 0.06)

  • Surgical mask:a RR = 0.45 (95% CI 0.07 to 2.71, p = 0.56)

  • N95 vs. surgical mask:b RR = 0.50 (95% CI 0.06 to 4.23, p = 0.51)

Teleman et al., 2004

Case-control study in Singapore of 36 healthcare workers with probable SARS and 50 healthcare workers in the same ward with history of exposure

Adjusted odds ratio (multivariate analysis) associated with transmission of SARS:

  • Wearing of N95 mask: 0.1 (95% CI 0.02 to 0.9, p = 0.04)

  • Wearing of gloves: 1.5 (95% CI 0.3 to 7.2, p = 0.6)

  • Wearing of gowns: 0.5 (95% CI 0.4 to 6.9, p = 0.6)

  • Handwashing after each patient: 0.07 (95% CI 0.008 to 0.7, p = 0.02)

Respiratory Syncytial Virus (RSV)

Hall and Douglas, 1981

Comparison of use and nonuse of gowns and masks by staff members on a pediatric ward with children < 3 years old

  • Proportion of infants acquiring RSV:

    • When masks and gowns were used by staff: 32%

    • When masks and gowns were not used by staff: 41%

  • Proportion of staff acquiring RSV:

    • During the time masks and gowns were used by staff: 33%

    • During the time masks and gowns were not used by staff: 42%

  • Measurable benefit not found in controlling spread of RSV

Murphy et al., 1981

Prospective study of use and nonuse of masks and gowns by staff members caring for infants with respiratory disease

  • Number of RSV or other respiratory infections did not differ significantly between the two groups of staff (handwashing only; and handwashing, gowning, and masking)



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