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Table 3 Odds ratios of FGID/SSF for complaints in the Complaints Score Questionnaire (CSQ). Odds ratios (OR, with 95% confidence intervals (CI)) of FGID/SSF (n = 238) for complaints elicited by the CSQ. Logistic regression is presented in different models. A factor analysis extracted four factors: A = psychological illness factor, B = somatic illness factor, C = miscellaneous factor, D = ache/fatigue factor. These were used in the modelling in the right two columns.

From: Psychological illness is commonly associated with functional gastrointestinal disorders and is important to consider during patient consultation: a population-based study

  I II III IV V
Symptom OR (CI) by Models adjusted for sex and age OR (CI) by Models adjusted for sex, age, alcohol, pain tablets, GI-tablets FACTOR OR (CI) by Models adjusted for sex and age OR (CI) by a main effect model adjusted for sex and age
SSF (all variables) 1 (Reference) 1 (Reference)    
FGID      
Cries easily 6.7 (2.3–19.9) 9.8 (2.0–47) A 8.0 (4.1–15.8) 1) Psychological illness 8.4 (4.0–17.5) 1) Psychological illness
Sleeping disturbance 6.2 (2.7–14.0) 3.2 (1.3–8) A   
General fatigue 14.5 (7.4–28.7) 12.6 (5.3–30) A, D   
Irritability 8.8 (4.1–17.8) 5.6 (2.3 – 13.7) A, D   
Nervousness 18.4 (4.2–80.3) 14.3 (2.8 – 72) A   
Impaired concentration 19.0 (5.7–63.8) 15.3 (4.0 – 58) A   
Difficulty to relax 15.7 (6.0–41.5) 10.9 (3.7–32) A   
Restlessness 40.0 (9.4–170) 32.2 (6.7–154) A   
Depression 8.6 (4.1–18) 4.7 (2.0 – 11) A   
Exhaustion 12.7 (4.4–37) 9.1 (2.7–30) A   
Chest pain 40.0 (5.3–300)   B 3.7 (2.0–7.1) 1) Somaticillness 2.8 (1.3–5.7) 1) Somaticillness
Pain in the joints 6.2 (2.8–13.6) 7.5 (2.6–21) B   
Pain in the legs 4.4 (2.2–8.9) 3.8 (1.6–9.3) B   
Overweight 2.0 (1.0–4.0) 1.4 (0.6–3.6) B   
Breathlessness 8.9 (3.2–25) 12.1 (3.3–45) B   
Dizziness 10.1 (4.2–24) 11.4 (3.8–34) B   
Impaired hearing 3.0 (1.3–6.8) 3.1 (1.0–9.5) B   
Eye problem 4.2 (1.9–9.1) 3.4 (1.3–9.0) B   
Loss of weight - - C 1.7 (0.9–3.0) 1) Miscellaneous  
Bad appetite - - C   
Feeling cold 7.3 (3.1–17) 7.0 (2.6–19) C   
Difficulty in passing urine 9.6 (2.0–47) 9.1 (1.4–59) C   
Back ache 4.4 (2.4–8.2) 2.0 (0.9–4.3) D 2.9 (1.6–5.2) 1) Ache/fatigue 4.3 (2.1–8.7) 1) Ache/fatigue
Headache 6.3 (3.4–12) 4.1 (1.9 – 9.1) D   
Sweating 3.6 (1.7 – 7.4) 3.3 (1.3 – 8.5)    
Coughing 2.0 (0.98–4.2) 1.7 (0.6–4.4)    
  1. 1) Reference group (OR = 1) is those coded 0 in each factor