IPA: /ˌbaɪoʊstəˈtɪstɪkəl/
KK: /baɪoʊstəˈtɪstɪkəl/
Related to the application of statistics to biological and health-related fields.
The biostatistical analysis helped researchers understand the effects of the new drug on patients.
Biostatistical → It is formed from "bio-" (from Greek "bios", meaning life) and "statistical" (from Latin "statisticus", meaning of or pertaining to the state or data). The word refers to statistical methods applied to biological or health-related data.
Think of 'bio-' meaning life, and 'statistical' relating to data — this helps you remember that biostatistical involves using data to understand life or health.