Table 2

Factors associated with daily adverse water events along the Gironde coast

Crude OR(95% CI)Adj. OR(95% CI)χ2
Wave factor*, m×s22.8
 <5.2Ref.Ref.
 5.2–9.23.89(2.03 to 9.81)6.41(2.93 to 18.3)
 >9.21.96(1.01 to 4.50)7.10(3.09 to 22.7)
Wave incidence factor*1.83(1.40 to 2.62)2.27(1.58 to 3.70)13.2
Cloud cover†‡0.52(0.37 to 0.74)
Air temperature*, °C43.0
 ≤21Ref.Ref.
 21–23.56.58(3.03 to 19.2)4.79(1.93 to 16.6)
 >23.519.10(9.62 to 61.8)12.20(4.69 to 52.3)
Water temperature*, °C
 ≤19.5Ref.
 19.5–21.33.95(2.13 to 9.14)
 >21.313.18(7.60 to 27.0)
Wind speed†, m/s
 ≤4.3Ref.
 4.3–6.31.71(1.00 to 3.14)
 >6.30.84(0.45 to 1.66)
Season10.4
 LowRef.Ref.
 High7.17(4.38 to 13.5)3.98(1.44 to 6.11)
Type of day17.1
 WeekdayRef.Ref.
 Weekend1.73(0.71 to 3.62)2.96(1.06 to 7.98)
 Holidays5.77(3.49 to 10.8)4.25(2.19 to 9.75)
  • Univariate and multivariate analyses performed with the aid of logistic regression models using retrospective data from 2011 to 2013.

  • *Daily maximal value.

  • †Daily mean value.

  • ‡Not incorporated into multivariate analyses because of differences in measurement modes.