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Table 3 List of variables included in the multivariable analyses, by comparison groups and levels of hierarchy

From: A logistic regression analysis of risk factors in ME/CFS pathogenesis

DomainSignificant variables resulting from the bivariate analyses, included in the multivariable models (p ≤ 0.10)
Multivariable analysis 1 – Comparison between people with ME/CFS and healthy controls
 Level 1 - DemographicAge at survey, sex, ethnicity
 Level 2 - Socio-EconomicMarital status, education, income
 Level 3 - Family Health HistoryAsthma, allergies, depression, anxiety, learning disabilities, mental health issues, physical disabilities, other health problems, other neurologic problems
 Level 4 - LifestyleSmoking status, alcohol consumption/week, physical activity previous 6 months
 Level 5 - Previous Morbidity (prior to disease onset)Asthma, depression, anxiety, stress, colds, alcohol intolerance, sugar intolerance, other health problems
 Level 6 - Recent Exposures (6 months prior to disease onset)Travelling, pesticides, chemicals, infection(s), pill contraception, surgery(ies), and gas fire appliances in the home
Multivariable Analysis2 – Comparison between people with ME/CFS and people with MS
 Level 1 - DemographicAge at disease onset, sex, ethnicity
 Level 2 - Socio-EconomicMarital status, education, income, and occupation at 6 months previous onset
 Level 3 - Family Health HistoryAllergies, anxiety
 Level 4 - LifestyleAlcohol consumption/week, physical activity previous 6 months
 Level 5 - Previous Morbidity (prior to disease onset)Asthma, allergies, depression, anxiety, stress, colds, alcohol intolerance, sugar intolerance, other health problems
 Level 6 - Recent Exposures (6 months prior to disease onset)Infection, BCG vaccine
  1. ME/CFS Myalgic Encephalomyelitis/Chronic Fatigue Syndrome, MS Multiple Sclerosis.