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Table 4 Self-reported frequency of undertaking risky/alcohol-related behaviours at rivers in the past 12 months and drinking alcohol prior to visiting and while at the river, by BAC and hazardous drinking levels, chi square

From: Breathalysing and surveying river users in Australia to understand alcohol consumption and attitudes toward drowning risk

  Total BAC 0.000 Positive BAC (0.001 and higher) X2 comparing BAC 0.000 to positive BAC (0.001 and higher) Hazardous drinking levels - Yes Hazardous drinking levels - No Hazardous levels - Unknown X2 comparing hazardous drinking levels - yes to hazardous drinking levels - no
  N % N % N % N % N % N %
Swim within 2 h of consuming alcohol (n = 677)
 Yes 277 40.9 200 35.2 77 70.6 47.489 (p < 0.001) 227 52.4 45 19.2 5 50.0 69.309 (p < 0.001)
 No 400 59.1 368 64.8 32 29.4 206 47.6 189 80.8 5 50.0
Boat within 2 h of consuming alcohol (as passenger or skipper) (n = 676)
 Yes 166 24.6 129 22.8 37 33.9 6.183 (p = 0.013) 124 28.6 38 16.3 4 40.0 12.508 (p < 0.001)
 No 510 75.4 438 77.2 72 66.1 309 71.4 195 83.7 6 60.0
Swim alone (n = 674)
 Yes 351 52.1 283 50.0 68 63.0 6.107 (p = 0.013) 237 54.9 106 45.7 8 80.0 5.084 (p = 0.024)
 No 323 47.9 283 50.0 40 37.0 195 45.1 126 54.3 2 20.0
Jump into a river from a height (e.g. from tree, bridge, rocks or using a rope swing) (n = 677)
 Yes 232 34.3 193 34.0 39 35.8 0.132 (p = 0.717) 173 40.0 56 23.9 3 30.0 17.297 (p < 0.001)
 No 445 65.7 375 66.0 70 64.2 260 60.0 178 76.1 7 70.0
Swim in water that was too deep to touch the bottom (n = 677)
 Yes 512 75.6 424 74.8 88 80.7 1.838 (p = 0.175) 339 78.3 165 70.5 8 80.0 4.977 (p = 0.026)
 No 165 24.4 144 25.4 21 19.3 94 21.7 69 29.5 2 20.0
Dive into water of unknown depth (n = 676)
 Yes 155 22.9 124 21.9 31 28.4 2.234 (p = 0.135) 114 26.4 39 16.7 2 20.0 8.108 (p = 0.004)
 No 521 77.1 443 78.1 78 71.6 318 73.6 195 83.3 8 80.0
Camp (stay overnight) (n = 677)
 Yes 293 43.3 240 42.3 53 48.6 1.512 (p = 0.219) 203 46.9 84 35.9 6 60.0 7.477 (p = 0.006)
 No 384 56.7 328 57.7 56 51.4 230 53.1 150 64.1 4 40.0
How often is alcohol consumed prior to visiting a river (n = 680)
 Never 429 63.1 391 68.5 38 34.9 49.655 (p < 0.001) 227 52.3 199 84.3 3 30.0 75.033 (p < 0.001)
 Sometimes 222 32.6 161 28.2 61 56.0 30.035 (p < 0.001) 187 43.1 30 12.7 5 50.0 63.114 (p < 0.001)
 Always 15 2.2 5 0.9 10 9.2 28.366 (p < 0.001) 14 3.2 0 0.0 1 10.0 7.654 (p = 0.003)*
 Not Applicable 14 2.1 14 2.5 0 0.0 6 1.4 7 3.0 1 10.0
How often is alcohol consumed while at the river (n = 680)
 Never 343 50.4 322 56.4 21 19.3 52.839 (p < 0.001) 169 38.9 171 72.5 3 30.0 74.559 (p < 0.001)
 Sometimes 307 45.1 233 40.8 74 67.9 25.696 (p < 0.001) 244 56.2 58 24.6 5 50.0 59.136 (p < 0.001)
 Always 21 3.1 7 1.2 14 12.8 40.509 (p < 0.001) 19 4.4 1 0.4 1 10.0 8.047 (p = 0.005)*
 Not Applicable 9 1.3 9 1.6 0 0.0 2 0.5 6 2.5 1 10.0
  1. *p value reported is Fisher’s Exact Test