Table 2.
SmokefreeMOM user characteristics, imputed data (N=1288).
| Characteristics | Total | Noncompletersa | Completersb | |
| Users, n (%) | 1288 (100.00)c | 715 (55.51)c | 573 (44.49)c | |
| Age, years | ||||
|
|
Mean (SD) | 29.58 (7.64) | 29.64 (7.68) | 29.49 (7.60) |
|
|
5% trimmed mean (SD) | 29.02 (6.35)d | 29.09 (6.33)e | 28.93 (6.38)f |
|
|
Range | 14-99 | 16-99 | 14-72 |
|
|
Median (IQRg) | 29.00 (10.00) | 29.00 (10.00) | 28.00 (10.00) |
| Age (winsorized), years | ||||
|
|
Mean (SD) | 29.46 (7.11) | 29.52 (7.05) | 29.39 (7.19) |
|
|
5% trimmed mean (SD) | 29.02 (6.35)d | 29.09 (6.33)e | 28.93 (6.38)f |
|
|
Range | 14-54 | 16-54 | 14-54 |
|
|
Median (IQR) | 29.00 (10.00) | 29.00 (10.00) | 28.00 (10.00) |
| Time from sign-up date to due date, days | ||||
|
|
Mean (SD) | 161.21 (73.65) | 164.73 (75.57) | 156.82 (71.01) |
|
|
5% trimmed mean (SD) | 164.49 (75.93)d | 168.45 (78.25)e | 159.47 (72.34)f |
|
|
Range | 0-279 | 0-279 | 0-279 |
|
|
Median (IQR) | 175.50 (117.00) | 184.00 (113.00) | 167.00 (113.00) |
| Time from sign-up to quit date, days | ||||
|
|
Mean (SD) | 10.41 (15.74) | 9.38 (14.06) | 11.70 (17.53) |
|
|
5% trimmed mean (SD) | 8.04 (9.60)d | 7.58 (7.65)e | 8.93 (12.65)f |
|
|
Range | 0-197 | 0-197 | 0-144 |
|
|
Median (IQR) | 7.00 (13.00) | 7.00 (13.00) | 7.00 (13.00) |
| Prequit time, days | ||||
|
|
Mean (SD) | 6.12 (5.53) | 5.20 (5.29) | 7.28 (5.61) |
|
|
5% trimmed mean (SD) | 6.03 (5.83)d | 5.00 (5.58)e | 7.31 (5.91)f |
|
|
Range | 0-14 | 0-14 | 0-14 |
|
|
Median (IQR) | 5.00 (12.00) | 3.00 (10.00) | 7.00 (13.00) |
| Time from quit day to dropout, daysh | ||||
|
|
Mean (SD) | 10.70 (11.74)i | 10.70 (11.74)i | N/Aj |
|
|
5% trimmed mean (SD) | 9.67 (11.92)k | 9.67 (11.92)k | N/A |
|
|
Range | 0-42i | 0-42i | N/A |
|
|
Median (IQR) | 6.00 (16.00)i | 6.00 (16.00)i | N/A |
aNoncompleters were users who opted out of the intervention any time on or between day –14 (14 days before quit date) and intervention end (day 42).
bCompleters were users who remained in SmokefreeMOM until after intervention end.
cImputed Ns have 20 records and thus n is 1/20th of a subject rounded to the nearest integer.
dN=1158.
en=643.
fn=515.
gIQR: interquartile range.
hAmong those who made it to their quit date.
iN=509.
jNot applicable.
kN=457.