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Table 7 Odds ratio (OR) of recruiting a pregnant woman by recruitment method* (n = 2685)

From: You are how you recruit: a cohort and randomized controlled trial of recruitment strategies

  Number of recruits Odds ratio p-value
   [95% CI]  
Fax 28% Reference
(308/1112)
Direct 43% 1.93 0.40
(17/40) (0.41 - 9.01)
In-clinic 31% 1.02 0.81
(399/1291) (0.84 - 1.25)
Media    
 Free-media 68.0% 12.99 <0.001
  (77/114) (4.18 - 40.43)
 Paid-media 72.0% 4.63 <0.001
  (86/120) (2.08 - 10.31)
Tradeshows    
 No raffle was held 21% 0.56 <0.001
  (82/398) (0.41 - 0.75)  
 A raffle was held 12% 0.28 <0.001
  (11/92) (0.14 - 0.58)  
  1. Goodness of fit (p-value) = 0.79 (not significant indicating good fit).
  2. *Analysis controlled for recruiting study, gestational age and family income quintile.