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Table 1 Covariate distribution among the self-checklist and no self-checklist group

From: Mishaps and unsafe conditions in recreational scuba diving and pre-dive checklist use: a prospective cohort study

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%)
  1. a includes African American, Asian, and Hispanic