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Table 4 Referral, tracing and arrival rates in the control and intervention group before and after implementation of intervention measures

From: Improving detection and notification of tuberculosis cases in students in Shaanxi province, China: an intervention study

   Registered TB suspects Referred TB suspects Referral rate Referral arrival Referral arrival rate Direct arrival within 3 days TB suspects to be traced TB suspects traced Tracing rate Tracing arrival Tracing arrival rate TB suspects arrived Total arrival rate
   n n % n % n n n % n % n %
   A B C D E F G H I J K L M
Before Control 88 36 40.9 16 44.4 16 56 26 46.4 11 42.3 43 48.9
  Intervention 92 41 44.6 17 41.5 15 60 27 45 10 37.0 42 45.7
  P-Value    0.62   0.79     0.88   0.69   0.67
After Control 65 29 44.6 13 44.8 6 46 24 52.1 11 45.8 30 46.2
  Intervention 73 71 97.2 59 83.1 0 14 13 95 9 69.2 68 93.2
  P-Value    <0.001   <0.001     <0.001   0.31   <0.001
  1. Note: C = B/A*100%, E = D/B*100%, G = A-D-F, I = H/G*100%, K = J/H*100%, L = D + F + J, M = L/A*100%