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Table 3 Multivariate models for severe IID symptoms, versus mild or moderate symptoms combined for cases ≥5 years of age (IID2 study 2008–9)

From: Socioeconomic status is associated with symptom severity and sickness absence in people with infectious intestinal disease in the UK

  Baseline model Baseline + NS-SEC
  OR (95%CI) OR (95%CI)
Age group (years)
 5–14 reference reference
 15–24 3.01 (1.66–5.57) 2.70 (1.48–5.02)
 25–44 1.02 (0.69–1.50) 0.96 (0.65–1.42)
 45–64 0.73 (0.51–1.06) 0.69 (0.47–1.00)
 65+ 0.64 (0.43–0.95) 0.60 (0.41–0.90)
Sex
 Female reference reference
 Male 0.95 (0.77–1.19) 0.90 (0.72–1.13)
Ethnicity
 White reference reference
 Non-White 2.11 (1.18–3.83) 2.03 (1.14–3.70)
NS-SEC
 Managerial/professional   reference
 Intermediate   1.21 (0.91–1.61)
 Routine/manual   2.18 (1.66–2.87)
Log-likelihood −1255.1 −1239.3
Deviance 2510.2 2478.6
AIC 2526.2 2498.6
BIC 2566.7 2549.2
Number 1164 1164
  1. AIC Akaike information criterion, BIC Bayesian information criterion, CI confidence interval, IID infectious intestinal disease, NS-SEC National Statistics Socioeconomic Classification, OR odds ratio