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Table 3 Comparison of TB case finding performance of four models of community worker referral

From: Community referral for presumptive TB in Nigeria: a comparison of four models of active case finding

Variable Direct dealing with CWs model (N = 15) Supervision without quotas model (N = 60) Comprehensive quotas oriented model (N = 25) Unsupervised volunteer model (N = 24) Total (N = 124)
Annual compensation per CW $40 $160 $320 ≈$80  
 Referred clients tested for TB
  Total TB investigations (passive + active) 211 2062 5113 1436 8822
  presumptive TB clients referred by the CWs 48 498 1063 56 1665
  Proportion of TB investigation due to CW referral 22.7 % 24.2 % 20.8 % 3.9 % 18.9 %
  Average presumptive TB clients referred per CW (year) 3.2 8.3 42.5 2.3 13.4
  Average CW compensation per referral (year) $13 $19 $8 $34  
  Average CW referrals needed to detect 1 TB case 6 3.3 6 3.1 4.7
 TB patients diagnosed
  Total TB patients detected (actively and passively) in LGAs 70 654 1145 413 2282
  TB cases from CWs referrals (yr) 8 150 177 18 353
  Proportion of the total TB patients contributed by CWs 11.4 % 22.9 % 15.5 % 4.4 % 15.5 %
  CW compensation per TB patient diagnosed $75 $64 $45 $107  
  Mean number of TB patients contributed per CW (per year) 0.53 2.5 7.1 0.75 2.8
  1. Note: n Number of CW
  2. NB: The number of CWs used in calculation were obtained from the Local government TB register