Metadata Standard & Quick Search

Sex codes

Label	Numeric	Meaning
female	0	biological XX / reported female
male	1	biological XY / reported male
unknown	NaN	missing / indeterminate

Age

• age is stored as float, years (e.g. 42.7).

Python example

from biolearn.data_library import GeoData

# Search for datasets without loading them
df = GeoData.search(sex="male", min_age=65)
print(df.head())

# Preview available datasets
female_datasets = GeoData.search(sex="female")
print(f"Found {len(female_datasets)} datasets with female subjects")