Description Usage Format Source References Examples

Data describes the survival status of individual passengers on the British luxury passenger liner Titanic that sank when it struck an iceberg on April 1912, on its maiden voyage to New York City from Southampton, England (Weisberg, 2003). Information were obtained from Encyclopedia Titanica. The variables on the dataset called titanic3 were made available by Harrell Jr (2001) and contains pclass, sex, embarked and survival status for each person on the board of the Titanic. pclass refers to passenger class (1st, 2nd, 3rd), and is a proxy for socio-economic class. embarked indicates the place where the passenger embarked on the ship. The variables pclass and embarked were recoded in the present version of the dataset. These data were used to compute prevalence ratios and corresponding confidence intervals.

1 |

A data frame with 1307 observations on the following 4 variables:

- pclass
The passenger class (1st, 2nd, 3rd) in the ship. Recoded to 1=1st class and 0=2nd or 3rd classes.

- survived
The survival status of the passenger (1=yes, 0=no).

- sex
Sex of the passenger (1=female, 0=male).

- embarked
The place where the passenger embarked for the trip (Q=Queenstown, S=Southampton, C=Cherbourg). Recoded to 1=Queenstown or Cherbourg and 0=Southampton.

The data were originally obtained from

Dawson, Robert J. MacG. (1995), The Unusual Episode Data Revisited. Journal of
Statistics Education, 3.
http://www.amstat.org/publications/jse/v3n3/datasets.dawson.html

Weisberg, S. (2005) Applied Linear Regression. Third Edition. New Jersey: John-Wiley & Sons.

Frank E. Harrell Jr (2001) Regression Modelling Strategies. New York: Springer-Verlag.

1 2 3 4 5 6 7 |

```
Loading required package: boot
Loading required package: stats4
Loading required package: lme4
Loading required package: Matrix
Loading required package: Hmisc
Loading required package: lattice
Attaching package: 'lattice'
The following object is masked from 'package:boot':
melanoma
Loading required package: survival
Attaching package: 'survival'
The following object is masked from 'package:boot':
aml
Loading required package: Formula
Loading required package: ggplot2
Attaching package: 'Hmisc'
The following objects are masked from 'package:base':
format.pval, round.POSIXt, trunc.POSIXt, units
[1] 1307 4
as.factor(pclass)
n missing distinct
1307 0 2
Value 0 1
Frequency 986 321
Proportion 0.754 0.246
pclass
survived 0 1
0 686 123
1 300 198
Call: glm(formula = survived ~ as.factor(pclass), family = binomial,
data = titanic)
Coefficients:
(Intercept) as.factor(pclass)1
-0.8271 1.3032
Degrees of Freedom: 1306 Total (i.e. Null); 1305 Residual
Null Deviance: 1737
Residual Deviance: 1639 AIC: 1643
```

prLogistic documentation built on May 29, 2017, 2:01 p.m.

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.