Trajectories of Nutritional Risk: The Manitoba Follow-Up Study

Area of Science:

• Gerontology
• Nutritional Science
• Public Health

Background:

• Aging populations present unique nutritional challenges.
• Identifying nutritional risk factors is crucial for maintaining health in older adults.
• Longitudinal studies are essential for understanding health trajectories in aging populations.

Purpose of the Study:

• To identify distinct patterns of nutritional risk among very old men over a four-year period.
• To analyze the association between nutritional risk trajectories and survival rates.
• To project the survival rates of older men over a two-and-a-half-year follow-up period.

Main Methods:

• Prospective longitudinal study design.
• Utilized the semi-parametric group-based trajectory approach and survival analysis.
• Analyzed four years of Nutritional Risk SCREEN II scores from 336 male participants (average age 90).

Main Results:

• Five distinct nutritional risk trajectory groups were identified.
• Significant differences were observed across groups in mental health, physical health, successful aging perception, and living arrangements.
• Men in the poorest nutritional risk group had double the mortality risk compared to those in the best group (hazard rate = 2.33).

Conclusions:

• Distinct nutritional risk trajectories exist for older men.
• Poor nutritional risk trajectories are linked to increased short-term mortality risk in very old men.
• Emphasizes the need for timely nutritional assessments, education, and follow-up for older men at risk.