Table A1.3Health-care facilities – quality assessment

No. studiesDesignLimitationsInconsistencyIndirectnessImprecisionOther considerationsQuality
LTBI incidence among HWs in high-income countries
32Observational studyNo serious limitationsNo serious inconsistencyNo serious indirectnessNo serious imprecisionVery strong associationaHIGH
LTBI incidence among HWs in low to middle-income countries
10Observational studyNo serious limitationsNo serious inconsistencyNo serious indirectnessNo serious imprecisionVery strong associationHIGH
TB incidence among HWs in high-income countries
14Observational studyNo serious limitationsNo serious inconsistencyNo serious indirectnessNo serious imprecisionVery strong associationbHIGH
TB incidence among HWs in low to middle-income countries
22Observational studyNo serious limitationsNo serious inconsistencyNo serious indirectnessNo serious imprecisionVery strong associationcHIGH

HW, health worker; LTBI, latent TB infection; IRR, incidence rate ratio.

a

Thirteen studies, IRR >5; thirty three studies, IRR >2

b

Two studies, IRR >5; six studies, IRR >2

c

Seventeen studies, IRR >5; twenty one studies, IRR >2

From: ANNEX 1, Quantification of TB transmission in selected settings

Cover of WHO Policy on TB Infection Control in Health-Care Facilities, Congregate Settings and Households
WHO Policy on TB Infection Control in Health-Care Facilities, Congregate Settings and Households.
Copyright © World Health Organization 2009.

All rights reserved. Publications of the World Health Organization can be obtained from WHO Press, World Health Organization, 20 Avenue Appia, 1211 Geneva 27, Switzerland (tel.: +41 22 791 3264; fax: +41 22 791 4857; e-mail: tni.ohw@sredrokoob). Requests for permission to reproduce or translate WHO publications – whether for sale or for noncommercial distribution – should be addressed to WHO Press, at the above address (fax: +41 22 791 4806; e-mail: tni.ohw@snoissimrep).

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.