Table 2

Clinical and demographic characteristics of study participants

Study siteSUNMRCUCRCKPSUNAMTotal
Participants (n)16120917111749707
Age, mean±SD, years37.4±11.334.9±12.133.1±1039.9±13.636.5±9.636.0±11.8
Men, n (%)68 (42)123 (59)87 (51)59 (50)28 (57)365 (52)
HIV pos, n (%)28 (17)20 (10)28 (16)67 (57)27 (55)170 (24)
QFT pos, n (%)105 (69)83 (41)119 (70)44 (38)35 (71)386 (56)
Definite TB, n (%)22 (14)53 (25)59 (35)18 (15)33 (67)185 (26)
Probable TB, n (%)4 (2)13 (6)4 (2)3 (3)5 (10)29 (4)
Total TB*, (n)2666632138214
No-PTB, n (%)133 (83)140 (67)108 (63)96 (82)10 (20)487 (69)
Questionable, n (%)2 (1)3 (1)0 (0)0 (0)1 (2)6 (1)
  • The number and characteristics of participants enrolled from the different study sites are shown.

  • *Total TB cases=all the Definite TB+Probable TB cases.

  • KPS, Karonga Prevention Study, Malawi; MRC, Medical Research Council Unit, The Gambia; No-PTB, non-‘pulmonary TB’; pos, positive; QFT, Quantiferon TB Gold In Tube; SUN, Stellenbosch University, South Africa; TB, pulmonary TB; UCRC, Makerere University, Uganda; UNAM, University of Namibia, Namibia.