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Table 4 a-o. Pairwise measures of agreement for select sociodemographic and TB indicator variables for patients with records in all data sources (n = 1077)

From: Completeness and Reliability of the Republic of South Africa National Tuberculosis (TB) Surveillance System

  TB Register Initial ETR District ETR Provincial ETR National ETR
a) Age
TB Blue Card 0.99 0.98 0.93 0.95 0.95
TB Register   0.98 0.94 0.95 0.95
Initial ETR    0.96 0.97 0.97
District ETR     0.99 0.99
Provincial ETR      1.0
National ETR      
b) Sex
TB Blue Card 0.93 0.91 0.89 0.90 0.90
TB Register   0.94 0.90 0.92 0.93
Initial ETR    0.95 0.95 0.95
District ETR     0.99 0.99
Provincial ETR      1.0
National ETR      
c) Patient category (new, relapse, retreatment after failure, retreatment after default, other)
TB Blue Card 0.82 0.72 0.57 0.63 0.64
TB Register   0.81 0.64 0.71 0.72
Initial ETR    0.81 0.86 0.87
District ETR     0.94 0.94
Provincial ETR      0.99
National ETR      
d) Disease classification (pulmonary or extrapulmonary)
TB Blue Card 0.81 0.85 0.71 0.81 0.80
TB Register   0.87 0.63 0.83 0.82
Initial ETR    0.91 0.95 0.95
District ETR     0.99 0.99
Provincial ETR      1.0
National ETR      
e) Pretreatment smear result (negative, positive, contaminated)
TB Blue Card 0.62 0.46 0.33 0.30 0.30
TB Register   0.58 0.43 0.40 0.40
Initial ETR    0.70 0.55 0.55
District ETR     0.56 0.56
Provincial ETR      0.96
National ETR      
f) Treatment regimen (2RHEZ/4RH, 2RHZES/1RHEZ/5RHE, RHZ/4RH, Other, INH)
TB Blue Card 0.72 0.69 0.68 0.66 0.67
TB Register   0.80 0.73 0.77 0.78
Initial ETR    0.94 0.95 0.96
District ETR     0.98 0.99
Provincial ETR      0.99
National ETR      
g) HIV status (negative, positive, recorded unknown)
TB Blue Card 0.41 0.11    
TB Register   0.38    
Initial ETR      
District ETR      
Provincial ETR      
National ETR      
h) DOT during intensive phase (no, yes)
TB Blue Card −0.21 −0.20 −0.13 −0.13 −0.14
TB Register   −0.13 −0.14 −0.10 −0.10
Initial ETR    −0.10 −0.05 −0.07
District ETR     - 0.09 −0.11
Provincial ETR      −0.04
National ETR      
i) Smear conversion result – 2 month (negative, positive, contaminated)
TB Blue Card 0.19 −0.01 −0.11 −0.15 −0.13
TB Register   0.11 −0.07 −0.02 −0.01
Initial ETR    0.11 0.08 0.09
District ETR     0.28 0.29
Provincial ETR      0.85
National ETR      
j) Smear conversion result – 3 month (negative, positive, contaminated)
TB Blue Card −0.23 −0.35 −0.42 −0.38 −0.37
TB Register   −0.25 −0.45 −0.27 −0.27
Initial ETR    −0.34 −0.29 −0.26
District ETR     0.02 0.01
Provincial ETR      0.78
National ETR      
k) DOT, end of treatment (no, yes)
TB Blue Card −0.52 −0.09 −0.03 −0.06 −0.06
TB Register   −0.19 −0.11 −0.11 −0.11
Initial ETR    −0.07 −0.08 −0.12
District ETR     −0.07 −0.07
Provincial ETR      −0.05
National ETR      
l) Treatment outcome (cured, completed, defaulted, failure, died, transferred out, moved out)
TB Blue Card 0.66 0.55 0.48 0.50 0.50
TB Register   0.74 0.60 0.68 0.68
Initial ETR    0.85 0.87 0.87
District ETR     0.96 0.96
Provincial ETR      0.97
National ETR      
  1. Values represent intraclass correlation coefficients for the continuous variable of age, and kappa statistics for categorical variables
  2. Comparisons with district/2nd-level ETR only include Gauteng and Mpumulanga provinces, as the initial ETR in KwaZulu-Natal is at the district level, and the data is included as initial ETR for KwaZulu-Natal