Medical impact analysis for the space station.

Area of Science:

• Space medicine
• Occupational health
• Medical informatics

Background:

• Space Station Health Maintenance Facility has limited capacity for medical supplies and equipment.
• Decisions on medical provisions require evidence-based research.
• Analog populations are used to simulate health risks in space environments.

Purpose of the Study:

• To determine medical care priorities for the Space Station.
• To identify critical diseases and injuries requiring medical provisions.
• To validate a medical impact analysis method using analog populations.

Main Methods:

• Conducted a medical impact analysis on U.S. Army and U.S. Navy personnel data.
• Utilized the International Classification of Disease, 9th Revision, Clinical Modification (ICD-9-CM) for disease and injury categorization.
• Developed a Medical Impact Score (MIS) combining incidence rates and disease outcome severity.
• Assessed method validity through rank order correlation between analog populations.

Main Results:

• Significant differences in incidence and disability rates were observed between Army and Navy populations.
• Despite differing rates, the Medical Impact Score (MIS) rank orders for categories and sections showed no significant difference between the two groups (p < 0.001).
• Cardiac events, musculoskeletal injuries, affective psychoses, and renal calculi were identified as high-priority medical concerns.

Conclusions:

• The medical impact analysis method is valid for determining Space Station medical priorities.
• The Space Station is projected to be a safer environment than Earth in several critical aspects.
• Key health risks for astronauts include cardiac events, musculoskeletal injuries, affective psychoses, and renal calculi, guiding necessary medical supplies.