Assumptions of Survival Analysis
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A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
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Risto Kaikkonen1, Tommi Härkänen, Ossi Rahkonen
1National Institute for Health and Welfare, Department of Health, Functional Capacity and Welfare, P.O. Box 30, 00271 Helsinki, Finland. risto.kaikkonen@thl.fi.
Socioeconomic disparities in sickness absence are significant. Addressing physical working conditions and smoking, especially for lower-educated workers, can reduce these differences.
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