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Table 1 Prognostic factors associated with rheumatic symptoms in 2008, cohort of French Gendarmes (2006–2008), n = 403 (Multinomial Logistic Regression Analysis)

From: Identification of initial severity determinants to predict arthritis after chikungunya infection in a cohort of French gendarmes

  Multivariate analysis (without early chronic symptoms) Multivariate analysis (with early chronic symptoms)
  Reference: no rheumatic disorders OR (95% CI) Reference: no rheumatic disorders OR (95% CI)
  Arthralgia Arthritis Arthralgia Arthritis
CHIKV Infection 4.67 (2.32-9.41)ǂ 26.75 (11.15-64.17)ǂ 2.58 (1.05-6.38)* 10.56 (3.42-32.63)ǂ
Comorbiditya 2.00 (1.25-3.20)ǂ 2.47 (1.19-5.14)* 2.03 (1.26-3.27)ǂ 2.27 (1.06-4.87)*
Symptoms at acute stage     
Depressed moodb 8.90 (1.06-74.95)* 13.92 (1.66-116.88)* - -
Symptoms at early chronic stage (median: 6 months after infection)   
Arthralgiac - - 8.64 (1.95-38.17)ǂ 6.65 (1.33-33.30)*
Arthritisd - - 2.93 (0.47-18.18) 19.38 (3.36-111.82)ǂ
  1. *p < 0.05; ǂp < 0.005; OR: odds ratio; CI: confidence interval.
  2. aHistory of at least one of the following pathologies: sprain or dislocation of joints or bones and joint diseases, before CHIKV infection.
  3. bSelf-assessed mood coded as “depressed” if checked affected or totally depressed.
  4. cArthralgia = joint pain and/or stiffness.
  5. dArthritis = swelling in addition to joint pain and stiffness.