Mmmec: Malignant melanoma deaths in Europe

In mlmRev: Examples from Multilevel Modelling Software Review

Description

Malignant Melanoma Mortality in the European Community associated with the impact of UV radiation exposure.

Usage

data(Mmmec)

Format

A data frame with 354 observations on the following 6 variables.

nation

a factor with levels Belgium, W.Germany, Denmark, France, UK, Italy, Ireland, Luxembourg, and Netherlands

region

Region ID - a factor.

county

County ID - a factor.

deaths

Number of male deaths due to MM during 1971–1980

expected

Number of expected deaths.

uvb

Centered measure of the UVB dose reaching the earth's surface in each county.

Source

http://www.bristol.ac.uk/cmm/learning/mmsoftware/data-rev.html

References

Langford, I.H., Bentham, G. and McDonald, A. 1998: Multilevel modelling of geographically aggregated health data: a case study on malignant melanoma mortality and UV exposure in the European community. Statistics in Medicine 17: 41-58.

Examples

str(Mmmec)
summary(Mmmec)
(fm1 <- glmer(deaths ~ uvb + (1|region), Mmmec, poisson, offset = log(expected)))

Example output

Loading required package: lme4
Loading required package: Matrix
'data.frame':	354 obs. of  6 variables:
 $ nation  : Factor w/ 9 levels "Belgium","W.Germany",..: 1 1 1 1 1 1 1 1 1 1 ...
 $ region  : Factor w/ 78 levels "1","2","3","4",..: 1 2 2 2 2 2 3 3 3 3 ...
 $ county  : Factor w/ 354 levels "1","2","3","4",..: 1 2 3 4 5 6 7 8 9 10 ...
 $ deaths  : int  79 80 51 43 89 19 19 15 33 9 ...
 $ expected: num  51.2 80 46.5 55.1 67.8 ...
 $ uvb     : num  -2.91 -3.21 -2.8 -3.01 -3.01 ...
       nation       region        county        deaths          expected     
 Italy    :95   44     : 13   1      :  1   Min.   :  0.00   Min.   :  0.69  
 France   :94   49     : 12   2      :  1   1st Qu.:  8.00   1st Qu.: 11.02  
 UK       :70   72     : 12   3      :  1   Median : 14.50   Median : 18.76  
 W.Germany:30   59     :  9   4      :  1   Mean   : 27.83   Mean   : 27.80  
 Ireland  :26   65     :  9   5      :  1   3rd Qu.: 31.00   3rd Qu.: 34.39  
 Denmark  :14   66     :  9   6      :  1   Max.   :313.00   Max.   :258.86  
 (Other)  :25   (Other):290   (Other):348                                    
      uvb           
 Min.   :-8.900200  
 1st Qu.:-4.158400  
 Median :-0.886400  
 Mean   : 0.000204  
 3rd Qu.: 3.275525  
 Max.   :13.359000  
                    
Generalized linear mixed model fit by maximum likelihood (Laplace
  Approximation) [glmerMod]
 Family: poisson  ( log )
Formula: deaths ~ uvb + (1 | region)
   Data: Mmmec
 Offset: log(expected)
      AIC       BIC    logLik  deviance  df.resid 
 2256.400  2268.008 -1125.200  2250.400       351 
Random effects:
 Groups Name        Std.Dev.
 region (Intercept) 0.4119  
Number of obs: 354, groups:  region, 78
Fixed Effects:
(Intercept)          uvb  
   -0.13859     -0.03443  

mlmRev documentation built on April 5, 2020, 9:07 a.m.