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import pandas as pd

df = pd.read_csv('../input/colorectal-cancer-patients/crc.txt', sep='\t')
df

df = df.drop('Unnamed: 9', axis=1)
df = df.drop('Unnamed: 10', axis=1)
df = df.drop('Unnamed: 11', axis=1)
df = df.drop(index=62, axis=0)
df

features_num = ['Age (in years)', 'DFS (in months)']

df[features_num].describe(percentiles=[0.1, 0.25, 0.5, 0.75, 0.9])