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Table 5 P-values for evidence of clustering at different cluster strata. Analyses based on comparisons of genetic distances between pairs of participants, based on the Hamming distance for pairs of participants in same or different cluster strata

From: Impact of a single round of mass drug administration with azithromycin on active trachoma and ocular Chlamydia trachomatis prevalence and circulating strains in The Gambia and Senegal

Cluster strata The Gambia Senegal
ompA MLST6 ompA MLST6
Baseline Follow-up Baseline Follow-up Baseline Follow-up Baseline Follow-up
Village < 0.001 < 0.001 < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.0001
Household 0.156 < 0.002 0.37 0.03 0.229 < 0.0001 0.039 0.0029
  1. Note: MLST6 variants include ompA combined with all five MLST5 regions (hctB, CT058, CT144, CT172, pbpB)