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Table 2 Adjusted odds ratios of influenza emergency room visits associated with extreme precipitation (≥99th percentile) within 0–6 days, stratified by individual level characteristics

From: Extreme precipitation and emergency room visits for influenza in Massachusetts: a case-crossover analysis

 

OR (95% CI)

p

Age group

 0–4

1.12 (0.93, 1.35)

 

 5–18

1.32 (1.14, 1.52)

 

 19–64

1.23 (1.15, 1.32)

 

 65+

1.11 (0.85, 1.45)

0.398

Gender

 Male

1.23 (1.13, 1.34)

 

 Female

1.23 (1.13, 1.33)

0.987

Race

 White

1.24 (1.04, 1.48)

 

 Black

1.48 (1.30, 1.68)

 

 Other

1.18 (1.10, 1.27)

0.035

Temperature

  < 40 °F

1.20 (1.12, 1.28)

 

  ≥ 40 °F

1.38 (1.21, 1.59)

0.156

Season

 Winter (Dec-Feb)

1.22 (1.13, 1.32)

 

 Spring (Mar-May)

1.23 (1.11, 1.36)

 

 Summer (Jun-Aug)

1.18 (0.69, 1.99)

 

 Fall (Sept-Nov)

1.31 (1.00, 1.72)

0.466