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Table 2 Characteristics of studies included in the review

From: A systematic review of the quality of conduct and reporting of survival analyses of tuberculosis outcomes in Africa

  All the studies (n = 76)
n (%)
Study design
 Retrospective cohort 54 (71)
 Prospective cohort 21 (28)
 Randomized controlled trial 1 (1.3)
Type of study time-to-event outcomea
 Cured 9 (12)
 Treatment complete 27 (36)
 Treatment failure 16 (21)
 Death 72 (95)
 Default 37 (49)
 Transfer out 5 (6.6)
Study size
 Median [IQR] 492 [286–1330]
 Minimum to Maximum 56–182,890
Survival analyses objective
 Curve estimation 2 (2.6)
 Survival regression analyses 16 (21)
 Both 58 (76)
Involvement of statistician/epidemiologist
 Yes 43 (57)
 Not reported 54 (71)
Authors affiliationb
 Country of focus only 21 (28)
 Country of focus plus other African country 5 (6.6)
 Country of focus plus developed country 55 (72)
Publication Journal
 PLOS One 22 (29)
 International Journal of Tuberculosis and Lung Diseases (IJTLD) 9 (12)
 BMC Infectious Disease 9 (12)
 BMC Public Health 4 (5.3)
 Clinical Infectious Disease 3 (3.9)
 Othersc 29 (38)
Statistical software used
 SPSS 15 (20)
 SAS 9 (12)
 STATA 40 (53)
 R 7 (9.2)
 Not reported 5 (6.6)
  1. IQR interquartile range, aStudies evaluated more than one time-to-event outcome, bsome studies had authors with African and developed countries affiliation and therefore the percentage > 100%, cAIDS-1, AIDS Respiratory Therapy-1, BMJ Thorax-1, American Journal of Tropical Medicine and hygiene-1, Annals of Epidemiology-1, EclinicalMedicine-1, Infectious diseases-1, Infection-1, Infectious Diseases of Poverty-2, International Journal of Infectious Diseases-2, International Journal of Mycobacteriology-2, International Journal of Pharmaceutical and Clinical Research-1, Journal of Acquired Immune Deficiency Syndromes-1, Lancet-1, Lancet Respiratory Medicine-1, PLOS Medicine-2, Pan African Medical Journal-1, The Pediatric Infectious Disease Journal −3, The Journal of Pediatrics-1, The Journal of Infectious Diseases-1, Tropical Medicine and International Health-2, Tropical Medicine and Health-1