A comprehensive exploratory data analysis (EDA) of a large-scale cancer patient dataset (~890,000 records) spanning multiple European countries. Built entirely in Microsoft Excel using PivotTables, calculated fields and dynamic charts across structured analytical worksheets, then reproduced and extended in R for portfolio publication.
## # A tibble: 6 x 17
## ID age gender country diagnosis_date cancer_stage family_history
## <dbl> <dbl> <chr> <chr> <dttm> <chr> <chr>
## 1 1 52 Female Denmark 2014-06-02 00:00:00 Stage IV Yes
## 2 2 46 Female Netherlands 2014-06-02 00:00:00 Stage II No
## 3 3 57 Female Greece 2014-06-02 00:00:00 Stage II No
## 4 4 55 Male Malta 2014-06-02 00:00:00 Stage III Yes
## 5 5 64 Female Czech Repu~ 2014-06-02 00:00:00 Stage I Yes
## 6 6 66 Male Greece 2014-06-02 00:00:00 Stage IV No
## # i 10 more variables: smoking_status <chr>, bmi <dbl>,
## # cholesterol_level <dbl>, hypertension <dbl>, asthma <dbl>, cirrhosis <dbl>,
## # treatment_type <chr>, end_treatment_date <dttm>, survived <dbl>,
## # `Treatment Duration` <dbl>
## ID age gender country
## Min. : 1 Min. : 4.00 Length:890000 Length:890000
## 1st Qu.:222501 1st Qu.: 48.00 Class :character Class :character
## Median :445001 Median : 55.00 Mode :character Mode :character
## Mean :445001 Mean : 55.01
## 3rd Qu.:667500 3rd Qu.: 62.00
## Max. :890000 Max. :104.00
## diagnosis_date cancer_stage family_history
## Min. :2014-06-02 00:00:00 Length:890000 Length:890000
## 1st Qu.:2016-12-01 00:00:00 Class :character Class :character
## Median :2019-06-04 00:00:00 Mode :character Mode :character
## Mean :2019-06-02 01:22:51
## 3rd Qu.:2021-12-01 00:00:00
## Max. :2024-05-30 00:00:00
## smoking_status bmi cholesterol_level hypertension
## Length:890000 Min. :16.00 Min. :150.0 Min. :0.00
## Class :character 1st Qu.:23.30 1st Qu.:196.0 1st Qu.:1.00
## Mode :character Median :30.50 Median :242.0 Median :1.00
## Mean :30.49 Mean :233.6 Mean :0.75
## 3rd Qu.:37.70 3rd Qu.:271.0 3rd Qu.:1.00
## Max. :45.00 Max. :300.0 Max. :1.00
## asthma cirrhosis treatment_type
## Min. :0.0000 Min. :0.000 Length:890000
## 1st Qu.:0.0000 1st Qu.:0.000 Class :character
## Median :0.0000 Median :0.000 Mode :character
## Mean :0.4697 Mean :0.226
## 3rd Qu.:1.0000 3rd Qu.:0.000
## Max. :1.0000 Max. :1.000
## end_treatment_date survived Treatment Duration
## Min. :2014-12-02 00:00:00 Min. :0.0000 Min. :183.0
## 1st Qu.:2018-03-06 00:00:00 1st Qu.:0.0000 1st Qu.:367.0
## Median :2020-09-03 00:00:00 Median :0.0000 Median :458.0
## Mean :2020-09-02 03:28:22 Mean :0.2202 Mean :458.1
## 3rd Qu.:2023-03-03 00:00:00 3rd Qu.:0.0000 3rd Qu.:550.0
## Max. :2026-05-30 00:00:00 Max. :1.0000 Max. :730.0