Job Strain and Saliva Cortisol Levels in a Swedish Population
Author Information
Author(s): Alderling Magnus, Theorell Töres, de la Torre Bartolomé, Lundberg Ingvar
Primary Institution: Karolinska Institutet, Stockholm, Sweden
Hypothesis
Is there an association between job strain and saliva cortisol levels in a population-based study?
Conclusion
The study found weak support for the hypothesis that job strain is associated with saliva cortisol concentrations, particularly in women.
Supporting Evidence
- Women in low strain jobs had lower cortisol levels after awakening compared to those in high strain jobs.
- No significant differences in cortisol levels were found among men across different job strain categories.
- The study adjusted for various confounders, including mental state and medication.
Takeaway
Women with less stress at work had lower cortisol levels in their saliva after waking up, but this wasn't the case for men.
Methodology
The study analyzed saliva samples from 529 individuals who held jobs, assessing job control and demands through questionnaires and interviews.
Potential Biases
Potential confounding factors such as medication and psychological state were considered but had minimal impact on results.
Limitations
The findings may not be generalizable to all populations, and the study primarily focused on women.
Participant Demographics
The study included 348 women and 181 men from a working population in Stockholm.
Statistical Information
P-Value
p<0.05
Confidence Interval
95% confidence limits 1.5–22.3%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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