FEV Dataset

The “FEV” dataset is one of several ready-to-use datasets on the Vanderbilt Department of Biostatistics dataset repository. It can be retrieved with the getHdata function.

Variables

ID variable
- id
Categorical variables
- sex
- smoke
Continuous variables
- fev
- height
Discrete variables
- age

Descriptive Statistics

d

6 Variables 654 Observations

n	missing	distinct	Info	Mean	Gmd	.05	.10	.25	.50	.75	.90	.95
654	0	654	1	37170	27213	3142	6162	15811	36071	53638	73342	77706

lowest : 201 202 301 341 351 , highest: 83841 83901 83951 83952 90001

age years

n	missing	distinct	Info	Mean	Gmd	.05	.10	.25	.50	.75	.90	.95
654	0	17	0.988	9.931	3.3	5	6	8	10	12	14	15

lowest : 3 4 5 6 7 , highest: 15 16 17 18 19

 Value          3     4     5     6     7     8     9    10    11    12    13    14
 Frequency      2     9    28    37    54    85    94    81    90    57    43    25
 Proportion 0.003 0.014 0.043 0.057 0.083 0.130 0.144 0.124 0.138 0.087 0.066 0.038
                                         
 Value         15    16    17    18    19
 Frequency     19    13     8     6     3
 Proportion 0.029 0.020 0.012 0.009 0.005

fev liters

n	missing	distinct	Info	Mean	Gmd	.05	.10	.25	.50	.75	.90	.95
654	0	575	1	2.637	0.9681	1.445	1.612	1.981	2.547	3.119	3.813	4.289

lowest : 0.791 0.796 0.839 1.004 1.072 , highest: 5.102 5.224 5.633 5.638 5.793

height inches

n	missing	distinct	Info	Mean	Gmd	.05	.10	.25	.50	.75	.90	.95
654	0	56	0.999	61.14	6.497	51.0	53.0	57.0	61.5	65.5	68.5	70.0

lowest : 46.0 46.5 47.0 48.0 49.0 , highest: 72.0 72.5 73.0 73.5 74.0

sex

n	missing	distinct
654	0	2

 Value      female   male
 Frequency     318    336
 Proportion  0.486  0.514

smoke

n	missing	distinct
654	0	2

 Value      non-current smoker     current smoker
 Frequency                 589                 65
 Proportion              0.901              0.099

Inline Equation

The mean age is \(\mu =\) 9.9311927. (the LaTeX equation used here is \mu =)

Simple Table

current smoker	non-current smoker
65	589

Automatic Table

with(d, table(sex, smoke))

##         smoke
## sex      non-current smoker current smoker
##   female                279             39
##   male                  310             26

Wrap code with the kable function in the knitr package to produce a better looking table.

	non-current smoker	current smoker
female	279	39
male	310	26

Computing Environment

 R version 4.2.0 (2022-04-22)
 Platform: x86_64-pc-linux-gnu (64-bit)
 Running under: Ubuntu 18.04.6 LTS
 
 Matrix products: default
 BLAS:   /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.7.1
 LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.7.1
 
 attached base packages:
 [1] stats     graphics  grDevices utils     datasets  methods   base     
 
 other attached packages:
 [1] knitr_1.36      Hmisc_4.7-0     ggplot2_3.3.5   Formula_1.2-3   survival_3.2-13 lattice_0.20-45

To cite R in publications use:

R Core Team (2022). R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna, Austria. https://www.R-project.org/.

To cite the Hmisc package in publications use:

Harrell Jr F (2022). Hmisc: Harrell Miscellaneous. R package version 4.7-0, https://CRAN.R-project.org/package=Hmisc.

To cite the ggplot2 package in publications use:

Wickham H (2016). ggplot2: Elegant Graphics for Data Analysis. Springer-Verlag New York. ISBN 978-3-319-24277-4, https://ggplot2.tidyverse.org.

To cite the survival package in publications use:

Therneau T (2021). A Package for Survival Analysis in R. R package version 3.2-13, https://CRAN.R-project.org/package=survival.

Markdown Exercise

Cole Beck

09/09/2022