Skip to main content

Advertisement

Table 11 Demographics by recruits by media (paid and free) recruitment

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

  Free-media (Reference) Paid-media
   Postal Free-to-read print Transit Internet Radio Trade-specific publications Paid–to-read print Birth issues
Maternal characteristics          
Mean Age (SD) 31.5 (4.6) 30.1 (6.0) 32.3 (4.4)* 31.2 (3.8) 31.5 (4.3)* 30.7 (4.4) 30.9 (4.5)* 30.4 (3.7) 30.9 (4.5)*
  n = 10 n = 4 n = 27 n = 58 n = 126 n = 50 n = 313 n = 18 n = 479
Above 24 weeks GA 30.00% 25.00% 51.85% 53.45%** 53.54%* 40.00% 55.27%* 72.22%* 53.75%*
  (3/10) (1/4) (14/27) (31/58) (68/127) (20/50) (173/313) (13/18) (258/480)
Mother Caucasian 62.50% 100.00% 95.83% 90.57% 76.64% 85.71% 82.68% 81.25% 81.28%
  (5/8) (4/4) (23/24) (48/53) (82/107) (24/28) (191/231) (13/16) (291/358)
Mother attended post-secondary 55.56%* 100.00% 100.00% 92.59% 90.00% 93.10% 89.79% 100.00% 89.70%
  (5/9) (3/3) (24/24) (50/54) (99/110) (27/29) (211/235) (18/18) (331/369)
Mother reports no current or prior health conditions 25.00% 25.00% 12.50%** 24.53% 24.30% 21.43% 22.08%* 12.50% 22.91%*
(2/8) (1/4) (3/24) (13/53) (26/107) (6/28) (51/231) (2/16) (82/358)
Mother has or had asthma 25.00% 0.00% 8.33%** 18.87% 16.82% 32.14% 19.91% 6.25% 21.79%
  (2/8) (0/4) (2/24) (10/53) (18/107) (9/28) (46/231) (1/16) (78/358)
Mother smokes daily or occasionally 0.00% 0.00% 0.00% 5.66% 5.61% 3.57% 6.06% 6.25% 5.03%
(0/8) (0/4) (0/24) (3/53) (6/107) (1/28) (14/231) (1/16) (18/358)
Paternal characteristics          
Father born in Canada 66.67% 30.00% 91.67% 85.71% 86.79% 75.00% 85.44% 33.33%** 83.33%
  (2/3) (3/10) (11/12) (24/28) (46/53) (12/16) (88/103) (1/3) (145/174)
Father attended post-secondary 66.67% 66.67% 75.00% 85.71% 88.68% 81.25% 82.52% 100% 83.91%
  (2/3) (2/3) (9/12) (24/28) (47/53) (13/16) (85/103) (3/3) (146/174)
Father has or had asthma 33.33% 33.33% 33.33% 28.57% 16.98% 37.50% 18.45% 0.00% 24.14%
  (1/3) (1/3) (4/12) (8/28) (9/53) (6/16) (19/103) (0/3) (42/174)
Family characteristics          
Family income ≥ $80,000 33.33%* 66.67% 77.27% 75.00% 68.93% 60.71% 68.66% 75.00% 66.76%
  (3/9) (2/3) (17/22) (39/52) (71/103) (17/28) (149/217) (12/16) (231/346)
Family income ≥ $40,000 77.78% 66.67% 95.45% 96.15% 93.20% 89.29% 94.93% 100% 92.49%
  (7/9) (2/3) (21/22) (50/52) (96/103) (25/28) (206/217) (16/16) (320/346)
Married /Common law 77.78%* 100.00% 100.00% 97.74% 95.12% 95.83% 93.79% 100.00% 93.56%
  (7/9) (4/4) (27/27) (54/57) (117/123) (46/48) (287/306) (17/17) (436/466)
  1. Analyses controlled for the number of concurrent advertisements active.
  2. *p ≤ 0.05 ; **p ≤ 0.08.