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Table 1 Characteristics of included studies (n = 7)

From: The protective effect of isoniazid preventive therapy on tuberculosis incidence among HIV positive patients receiving ART in Ethiopian settings: a meta-analysis

Study Study area Study design Study period Age (years) Specimen Methods employed Participants IPT Follow up in months Experimental Control
Events Total Events Total
Abossie et al., 2017 [21] Arba Minch, SNNP RCS Sep 2010 - Aug 2011 25–34 Sputum Microscopy 271 6 months 12 138 37 133
Alemu et al., 2016 [25] West Gojjam and South Gondar, Amhara RCS Sep 2009 -Sep 2014 1–15 Sputum Microscopy, CXR and histopathology 645 6 months 11 119a 6 526
Nigussie et al., 2015 [22] Addis Ababa RCS Aug 2014 - May2015 >  15 Sputum Microscopy and CX 480 6 months 12 160 58 320
Edessa et al., 2014 [23] Addis Ababa RCS Sep 2009 - Mar 2012 >  18 N/S N/S 742 6 months 5 185 75 557
Yirdaw et al., 2014 [24] Southern Ethiopia, SNNP RCS Sep 2007 - Aug 2010 0.16–82 Sputum Microscopy and CXR 5407 6 months 51 2131 244 3276
Semu et al., 2017 [26] Addis Ababa RCS 2007 - Jan 2010 Adults N/S N/S 1842 12 months 4 942 71 900
Ahmed et al., 2015 [27] North-eastern Ethiopia, Afar RCS July 2010 - May 2015 >  15 N/S N/S 451 12 months 4 94 115 357
  1. Keys: CXR Chest x-ray, N/S not specified, RCS Retrospective cohort study, SNNP Southern nations nationalities and peoples of Ethiopia, aadministered IPT concomitantly with Cotrimoxazole