Principal lifetime occupation and MMSE score in elderly persons

Area of Science:

• Gerontology
• Neuroscience
• Sociology

Background:

• Cognitive function in aging is influenced by various factors.
• Age and education are established predictors of cognitive scores, such as the Mini-Mental State Examination (MMSE).
• The impact of lifelong occupational history on cognitive performance in later life requires further investigation.

Purpose of the Study:

• To examine the association between principal lifetime occupations and MMSE scores in community-dwelling elders.
• To determine if occupational influence on MMSE scores persists independently of age and education.

Main Methods:

• Cross-sectional study involving 524 community-dwelling elders aged 70 years and older.
• Multiple linear regression analysis was employed to assess the relationship between occupation type and MMSE scores.
• Adjustments were made for age, education level, and financial dissatisfaction.

Main Results:

• Principal lifetime occupations showed a significant correlation with MMSE scores, independent of age and education.
• Individuals in manual labor occupations (e.g., formers) exhibited lower average MMSE scores compared to those in white-collar professions.
• Specifically, formers scored 2.33 points lower on the MMSE than white-collar workers, a difference statistically significant (95% C.I. 0.46-4.21).

Conclusions:

• Lifelong occupational history is a relevant factor associated with cognitive function in older adults.
• The findings suggest that engaging in manual labor may be linked to diminished cognitive performance in later life.
• Occupational background offers a unique perspective on cognitive aging beyond traditional demographic factors.