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Table 6 Socio-demographic Profile of Study Sample by Retention Status

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

Variable Obtained No Information
Following Randomization
N = 224
Only PP1 Follow Up
Survey N = 168
All else
N = 734
p-value p-value*
US born 200 (89.3) 152 (90.5) 672 (91.60 .57  
Race/Ethnicity      
   NH Black 148 (66.1) 115 (68.5) 533 (72.6) .34  
   NH-White 30 (13.4) 18 (10.7) 74 (10.1)   
   Hispanic/other 46 (20.5) 35 (20.8) 127 (17.3)   
Education      
   < HS 73 (32.6) 47 (28.0) 241 (32.8) .78  
   HS/GED 84 (37.5) 69 (41.1) 285 (38.8)   
   College or more 67 (29.9) 52 (30.9) 208 (28.3)   
Married 40 (17.9) 35 (20.8) 143 (19.5)   
Income      
   < =10,000 32 (14.3) 36 (21.4) 158 (21.5) .74  
   10-30,000 79 (35.3) 63 (37.5) 275 (37.5)   
   30-60,000 35 (15.6) 28 (16.7) 106 (14.4)   
   > 60,000 19 (8.5) 10 (5.9) 64 (8.7)   
   DK/refused 59 (26.3) 31(18.5) 130 (17.7)   
Insurance Status      
   Private Insurance 66 (29.5) 38 (22.6) 222 (30.2) .24  
   Medicaid 149 (66.5) 123 (73.2) 492 (67.0)   
   Uninsured 9 (4.0) 7 (4.2) 19 (2.6)   
Age mean(sd) 25.1(6.3) 25.9(6.4) 25.1(6.4) .29  
GA mean(sd) 30.8 (3.8) 30.1(3.9) 29.9 (4.1) 02 .32
Baby-alive 203 (91.0) 152 (91.0) 648 (88.3) .37  
Regular dental checkups 138 (61.1) 95(56.6) 426 (58.0) .54  
Gum disease 11(4.9) 12 (7.1) 53 (7.2) .47  
     .04 .66
Physical health-fair/poor 73 (32.6) 52 (30.9) 303 (41.3)   
Smoking before preg 70 (31.3) 48 (28.6) 213 (29.0) .80  
Ever homeless 24 (10.7) 25 (14.9) 115 (15.7) .18  
CES-D >=23 50(22.3) 38(22.6) 203(27.7) .17  
BMI-mean(sd) 26.1 (7.1) 27.2 (6.5) 26.2 (6.7) .20  
  1. *P values reflect adjustment for multiple comparisons using Bonferroni method. Tests of significance for Age, GA, and BMI were based on one-way Analysis of Variance. All other were based on Chi-Square values