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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Ann Epidemiol. 2013 Mar 21;23(5):267–274. doi: 10.1016/j.annepidem.2013.02.006

Table 4.

Final Multivariable Logistic Regression with Robust Huber-White Standard Error Estimates Clustering on RDS Recruitment Network Membership, New York City (2006–2009)

Adjusted
Odds Ratio		 95%
Confidence
Interval
Individual-level variables
      Exchange sex in the past year 1.82 1.03, 3.23
      Any crack past 6 months 7.23 2.43, 21.55
      Homeless in past 6 months 0.32 0.17, 0.57
      Any cocaine past 6 months 0.40 0.20, 0.79
      Drug treatment in the past 6 months 1.62 1.05, 2.50
Neighborhood-level variables
      Percent Latinoa 1.83 1.19, 2.80
      Median value of owner-occupied housinga 1.48 1.14, 1.92
      ICE (Index of concentration at the extremes)b 5.85 1.40, 24.42
a

standardized by z-score

b

ICE=(#households in a census tract with incomes>$100,000)−(#households in a census tract with incomes<$20,000)#households in the census tract with income data (51)