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Mean number of unusable responses obtained from the web-based and mail versions of the survey
| N | # Missed questions per respondent | # Failed skipped patterns per respondent | # of inappropriate responses per respondent | # of unusable responses total per respondent | |
|---|---|---|---|---|---|
| Mean (range) | Mean (range) | Mean (range) | Mean (range) | ||
| Online | 262 | 1.3 (0–45) | NA | NA | 1.3 (0–45) |
| 102 | 7.4 (0–55) | 0.4 (0–2) | 0.85 (0–6) | 8.5 (0–55) | |
