Table 1 Covariate distribution among the self-checklist and no self-checklist group
Variables | Categories | Checklist types | |||
|---|---|---|---|---|---|
Written | Memorized or none | ||||
N | % | N | % | ||
Sex | Male | 26 | 79 | 274 | 70 |
Female | 7 | 21 | 119 | 30 | |
Age (in years) | 18–35 | 4 | 12 | 117 | 30 |
36 or more | 29 | 88 | 276 | 70 | |
Race | White | 410 | 94 | 379 | 96 |
Non-Whitea | 2 | 6 | 14 | 4 | |
Average yearly dives | 0–20 | 20 | 61 | 278 | 70 |
21–40 | 5 | 15 | 38 | 10 | |
>40 | 8 | 24 | 77 | 20 | |
Bad visibility | Yes | 6 | 18 | 23 | 6 |
No | 27 | 82 | 370 | 94 | |
High current | Yes | 3 | 9 | 73 | 19 |
No | 30 | 91 | 320 | 81 | |
All participants | 33 (7.8%) | 393 (92.2%) | |||