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Table 2 Socio-demographic Characteristics of Women Who Consented vs. Those Who Did Not

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

Characteristic Did Not Consent
Agreed to Short
Survey1
N = 118
Consented
N = 1126
p-value p-value*
US born_yes 100 (85.5) 1024 (90.9) 0.06  
Race/Ethnicity     
   NH Black 46 (38.8) 805 (71.5) 0.000* .000
   NH-White 56 (47.4) 117 (10.4)   
   Hispanic/other 16 (13.8) 204 (18.1)   
Education     
   < High School 14 (11.9) 361 (32.1) 0.000* .000
   HS/GED 36 (30.8) 438 (38.9)   
   College or more 68 (57.3) 327 (29.0)   
Married at Delivery_yes 61 (52.1) 218 (19.4) 0.000* .000
Household Income    0.000* .000
   < =10,000 8 (6.8) 226 (20.1)   
   10-30,000 24 (20.5) 418 (37.1)   
   30-60,000 30 (25.6) 169 (15.0)   
   > 60,000 38 (32.5) 93 (8.3)   
   Don't Know/Refused 17 (14.5) 220 (19.6)   
Insurance Status     
   Private Insurance 82 (69.8) 326 (29.0) 0.000* .000
   Medicaid 36 (30.2) 765 (67.9)   
   Uninsured 0 (0) 35 (3.1)   
Mothers Age: mean (sd) 29.9 (5.8) 25.3 (6.4) 0.000* .000
Gestational Age: mean (sd) 31.1 (3.5) 30.1 (4.0) 0.09*  
Baby-alive at time of interview     
  106 (89.7) 1004 (89.2) 0.866  
Regular dental visits 2 90 (76.3) 659 (58.5) 0.000* .000
Periodontal disease 3 11 (9.6) 76 (6.8) 0.260  
Physical health-fair/poor 4 3 (2.6) 110 (9.8) 0.02 .17
Smoking before or during pregnancy 23 (19.1) 331 (29.4) 0.02 .32
Ever homeless 1 (0.87) 164 (14.6) 0.000* .000
BMI mean (sd) 26.3 (5.8) 26.3 (6.7) 0.971  
  1. 1 Data only reported for those that completed the short form
  2. 2Reported making dental visits at least every 6 months
  3. 3 Ever being told that they had gum disease by a dentist
  4. 4Self-Reported Physical Health fair or poor as opposed to excellent, very good or good.
  5. *P values reflect adjustment for multiple comparisons using Bonferroni method