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Table 3 Results of Logistic Regression Analysis: Unadjusted and Adjusted Odds Ratios of Consenting vs. Not Consenting to Study*

From: Recruitment and retention of women in a large randomized control trial to reduce repeat preterm births: the Philadelphia Collaborative Preterm Prevention Project

  Unadjusted Adjusted
Odds (95% C.I.) Odds (95% C.I)  
Race/Ethnicity   
White 1.0 1.0
Hispanic/Other 5.99 (3.28, 10.93) 3.92 (2.07, 7.44)
African American 8.41 (5.42, 13.04) 5.03 (3.055, 8.39)
Household Income/yr1   
   > $30,000 1.0 1.0
   $10-30,000 4.51 (2.76, 7.36) 2.12 (1.20, 3.73)
   < $10,000 7.33 (3.45, 15.58) 2.64 (1.17, 5.94)
Marital Status   
Married 1.0 1.0
Single 4.52 (3.05, 6.68) 2.10 (1.29, 3.40)
Ever Homeless   
No 1.0 1.0
Yes 19.75 (2.70, 140.4) 11.29 (1.54, 82.8)
  1. 1 Don't Know/refused group was included in the analyses; for sake of clarity parameters are not shown.
  2. *Selected Characteristics: variables indicating significant relationship shown in Table 2 and remaining significant after Logistic Regression using backward elimination, with p < .10 as the criterion for remaining in the final model
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