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Table 2 Firework-related injury rate pre and post-law passage per 100,000a

From: The liberalization of fireworks legislation and its effects on firework-related injuries in West Virginia

Denominator

Pre-law Rate

Post-law Rate

Rate Ratiob

95% CI

P-valuec

Unique Patients

4.7

6.6

1.39

(0.74, 2.68)

0.3475

Healthcare Visits

0.73

1.0

1.38

(0.73, 2.67)

0.3576

Per Capita

0.98

1.47

1.51

(0.80, 2.91)

0.2256

  1. Abbreviations: CI Confidence Interval
  2. a Injury rates are presented by various denominators including by the number of individual/unique patients seen by West Virginia University Medicine, the number of total healthcare visits, and per capita rates during the study periods. All rates presented are per 100,000 individuals. b The referent group is the pre-law rate. c The p-value was calculated via Exact Poisson Regression