Table 2 Associations of annual flood index with incident dementia and its subtypes over lag 0–6 years

From: UK Biobank data demonstrate long-term exposure to floods is a risk factor for incident dementia

Cause of death

Number of cases

Odds ratio (95% CI)

Model 1

Model 2

Model 3

Any dementia

7713

1.26 (1.25 to 1.27)

1.27 (1.26 to 1.29)

1.28 (1.25 to 1.31)

Alzheimer’s disease

3185

1.34 (1.32 to 1.36)

1.34 (1.31 to 1.36)

1.44 (1.36 to 1.53)

Vascular dementia

1797

1.42 (1.38 to 1.46)

1.42 (1.37 to 1.46)

1.65 (1.48 to 1.83)

  1. ORs are presented for per unit increase in the annual flood index. Model 1 was a crude model (n = 69410 for any dementia; 28658 for Alzheimer’s disease; 16168 for vascular dementia); Mode 2 adjusted for socioeconomic status (education attainment, household income, and deprivation) (n = 55136 for any dementia; 22624 for Alzheimer’s disease; 12892 for vascular dementia); Model 3 was a fully adjusted model that additionally adjusted for BMI, physical activity, smoking, alcohol consumption, suboptimal diet, mean temperature, mean relative humidity, and assessment centre (n = 32,345 for any dementia; 13,381 for Alzheimer’s disease; 7639 for vascular dementia). CI confidence interval.
  2. CI confidence interval
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