Formula: SMR = O / E; exact Poisson limits chi2_{alpha/2, 2O}/2 and
chi2_{1-alpha/2, 2(O+1)}/2, divided by E
Usage
Smrind(observed, expected, alpha = 0.05)
Arguments
- observed
See Usage.
- expected
See Usage.
- alpha
See Usage.
Value
List with smr, ci_lower, ci_upper, observed, expected.
References
Breslow and Day (1987), Statistical Methods in Cancer Research Volume II:
The Design and Analysis of Cohort Studies, IARC. SMR = O/E with exact Poisson limits
on O is the standard published form, and is what the existing morie.fn.smr
implements.
Examples
Smrind(observed = 5L, expected = 5L)
#> $smr
#> [1] 1
#>
#> $ci_lower
#> [1] 0.3246973
#>
#> $ci_upper
#> [1] 2.333666
#>
#> $observed
#> [1] 5
#>
#> $expected
#> [1] 5
#>
#> $method
#> [1] "Standardised mortality ratio (indirect)"
#>
#> attr(,"class")
#> [1] "morie_rich_result" "list"
