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. Author manuscript; available in PMC: 2010 Jan 14.
Published in final edited form as: AIDS. 2009 Jan 14;23(2):225–232. doi: 10.1097/QAD.0b013e32831d2a81

Table 2.

Likelihood that sequences will cluster within the combined San Diego County, FCP and Epidemiologically-linked Partner cohorts.

Clustering of Combined Cohort*
Cohorts Clustered (n) Not Clustered (n) Odds Ratio 95% C.I.*
San Diego County 43 225 1 (ref.)
FCP 117 252 2.43 (1.61, 3.67)
Epi-linked Partners 29 7 21.68 (8.37, 58.42)
Total 189 484
*

Transmission clusters were defined after combining the San Diego County and First Choice Program (FCP) cohorts (combined cohorts) but not with the sequences from the Epidemiologically-linked (Epi-linked) partners; however, the epi-linked partners demonstrated the greatest odds of belonging within a transmission cluster that was previously defined. C.I.: confidence interval.