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Table 2 Retention at each time point in the randomized controlled trial and days to completion

From: The marketing plan and outcome indicators for recruiting and retaining parents in the HomeStyles randomized controlled trial

Time point All participants Experimental group Control group
n (%) Total experimental n (%) Active partici-pantsa
n (%)
Days to next time point
Mean ± SD
Passive partici-pants
n (%)
Days to next time point
Mean ± SD
Total control
n (%)
Active partici-pantsa
n (%)
Days to next time point
Mean ± SD
Passive partici-pants
n (%)
Days to next time point
Mean ± SD
Baseline survey 489 (100) 252 (100) 140 (55.56) 189.14 ± 138.72 112 (44.44) 402.76 ± 130.9b 237 (100) 124 (52.32) 169.15 ± 123.6 113 (47.68) 380.42 ± 113.75c
Mid-point survey 264 (53.99) 140 (55.56) 126 (90) 197.36 ± 108.93 14 (10) 336.86 ± 95.66b 124 (52.32) 102 (82.26) 163.64 ± 94.91 22 (17.74) 309.89 ± 19.99c
Post survey 172 (35.17) 89 (35.32) 86 (96.63) 43.46 ± 33.36 3 (3.34) 140.33 ± 43.16b 83 (35.02) 80 (96.39) 45.53 ± 36.95 3 (3.61) 95.67 ± 25.11c
Follow-Up survey 141 (28.83) 70 (27.78) 70 (100) 55.43 ± 63.10 0 (0) 0 (0) 71 (29.96) 71 (100) 51.16 ± 40.44 0 (0)  
Long-term follow-up survey 124 (25.36) 61 (24.21) -- -- -- -- 63 (26.58) -- -- -- --
  1. aActive participants were defined as retrieving 3 of 4 possible guides on their own from the website whereas Passive participants were defined as retrieving less than 3 of 4 possible guides on their own from the website between the following time points: baseline and mid-point survey; mid-point and post survey. At all other time points, participants were defined as Active if they retrieved 1 of 1 possible guide on their own and Passive if they did not retrieve a guide on their own from the website
  2. bIndependent t-tests and Mann Whitney U tests indicate significant (p ≤ 0.05) differences of active and passive participant days to next survey point in the experimental group
  3. cIndependent t-tests and Mann Whitney U tests indicate significant (p ≤ 0.05) differences of active and passive participant days to next survey point in the control group