1. df_combined: DataFrame combined with drugs, their observed proximity, their average random proximity,
the standard deviation of random proximity, their z-score, a column indicating the disease
(dementia, epilepsy, bipolar disorder, or schizophrenia), and another column indicating if the drug
is used for the treatment of the disease in the same row.
the standard deviation of random proximity, their z-score, a column indicating the disease,
and another column indicating if the drug is used for the treatment of the disease in the same row.
2. disease_name: Name of the disease
"""
# Filter the data to generate two new dataframes, one with data for drugs used as treatment for the disease, and another with data for the rest of drugs