Table 3.
Average cost per completed questionnaire for each data collection method
| Web | Phone | p valueb | ||
|---|---|---|---|---|
| Participant timea | 38 min | 41 min | 26 min | NS |
| Staff time | 10 min (preparation) | 10 min (preparation) | 26 min + 10 min (preparation) | – |
| Staff cost (28.6 cents/min) | $2.86 | $2.86 | $10.30 | – |
| Paper/Printing cost | – | $1.75 | $1.75 | – |
| Mailing costc | $2.58 | $7.80 | $2.58 | – |
| Total cost | $5.44b,c | $12.41a,b | $14.63b,c | <0.001 |
a
Average time; excludes events that were completed over the course of more than one day (n = 8)
b
p values determined by one-way ANOVA; means with similar superscripts are different at p < 0.05 (Tukey HSD for multiple comparisons)
c
Includes mailing of incentive upon event completion