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Table 2 Frequency of SOMS-2 symptoms (%), discriminative power (LR+) and correlation with SOMS-2 full scale

From: Assessing medically unexplained symptoms: evaluation of a shortened version of the SOMS for use in primary care

   SOMS-2 self reported SOMS-2 FCSE  
  Symptoms (%) Positive Likelihood )
ratio (95% CI)
(%) Positive Likelihood
ratio (95% CI)
rpbi
1 Headaches 21.6 1.54 (0.8-2.7) 31.7 2.72 (1.7-4.2) 0.31
2 Pain in the stomach 6.6 2.30 (0.7-7.3) 18.6 4.70 (2.3-9.6) 0.37
4 Joint Pain 6.0 2.90 (0.8-9.8) 9.6 3.21 (1.2-8.4) 0.24
5 Pain in the legs and/or arms 11.4 2.65 (1.1-6.2) 12.0 2.36 (1.0-5.4) 0.21
6 Chest Pain 7.2 3.86 (1.2-12) 13.2 5.15 (2.1-12) 0.33
8 Pain during sexual intercourse 4.8 5.79 (1.2-28) 7.2 5.79 (1.6-20) 0.22
10 Nausea 5.4 2.41 (0.7-8.6) 10.2 30.80 (4.2-227) 0.23
11 Bloating 15.6 4.34 (2.0-9.4) 14.4 5.79 (2.4-14) 0.45
12 Discomfort in the area around the heart 5.4 6.75 (1.5-31) 10.2 6.27 (2.1-18) 0.36
13 Vomiting (pregnancy excluded) 3.0 5|57   7.2 21.20 (2.8-160) 0.32
14 Bringing swallowed food up again 5.4 15.40 (1.9-120) 9.0 27.10 (3.6-200) 0.37
15 Hiccough, or burning sensations in chest or stomach 6.6 5.15 (1.4-19) 12.0 5.79 (2.2-15) 0.43
22 Frequent urination 7.2 5.79 (1.6-20) 6.6 5.15 (1.4-18) 0.28
24 Strong heart pounding 8.4 11.58 (2.7-50) 18.0 9.65 (3.9-24) 0.54
25 Stomach discomfort or churning feeling in the stomach 13.8 2.51 (1.2-5.4) 23.4 3.86 (2.2-6.9) 0.39
26 Sweating (hot or cold) 12.0 4.50 (1.8-11) 14.4 7.33 (2.9-18) 0.45
27 Flushing or blushing 6.6 8.68 (1.9-39) 4.8 5.79 (1.2-27) 0.28
28 Breathlessness (without exertion) 3.6 9.65 (1.2-80) 11.4 7.24 (2.5-21) 0.33
29 Painful breathing or hyperventilation 2.4 5.79 (0.6-54) 6.0 10|57   0.38
30 Excessive tiredness or mild exertion 17.4 4.29 (2.1-8.8) 19.8 5.15 (2.5-10) 0.40
31 Blotchiness or discoloration of the skin 4.8 3.21 (0.8-13) 4.2 11.58 (1.4-93) 0.26
32 Sexual indifference (loss of libido) 7.8 23.20 (3.1-174) 10.8 15.43 (3.7-65) 0.48
34 Impaired coordination or balance 5.4 3.86 (1.0-15) 7.8 6.43 (1.8-22) 0.38
35 Paralysis or localized weakness 2.4 4|57   4.2 7|57   0.42
36 Difficulty swallowing or lump in the throat 6.0 17.4 (2.3-134) 9.6 28.95 (3.9-213) 0.39
37 Aphonia 6.0 4.50 (1.2-17) 7.2 5.79 (1.6-21) 0.25
41 Unpleasant numbness or tingling sensations 12.6 3.86 (1.7-9.0) 11.4 7.24 (2.5-21) 0.32
46 Amnesia (loss of memory) 10.2 3.54 (1.4-9.1) 14.4 9.65 (3.5-27) 0.40
47 Loss of consciousness 1.8 3|57   4.8 8|57   0.35
  Excluded (no discriminative power in FCSE)        
3 Back Pain 11.4 1.74 (0.7-4.0) 16.2 2.81 (1.4-5.6) 0.12
7 Pain in the anus 1.8 3.86 (0.4-41) 0.6 1|57   0.13
9 Pain during urination 1.2 2|57   1.2 2|57   0.23
16 Food intolerance 0.6 1|57   1.8 3.86 (0.4-41) 0.19
17 Loss of appetite 7.2 3.86 (1.2-12) 9.6 2.48 (0.9-6.3) 0.20
18 Bad taste in mouth, or excessive coated tongue 6.6 3.38 (1.0-11) 4.2 4.82 (0.9-24) 0.16
19 Dry mouth 11.4 2.65 (1.1-6.2) 7.2 1.38 (0.5-4.2) 0.05
33 Unpleasant sensations in or around the genitals 1.8 3.86 (0.4-42) 3.6 3.86 (0.7-20) 0.16
38 Urinary retention 0.0    0.0    
39 Hallucinations 1.8 3|57   1.2 2|57   0.10
42 Double vision 3.0 1.29 (0.2-7.5) 3.6 3.86 (0.7-20) 0.20
44 Deafness 1.8 3|57   2.4 5.79 (0.6-54) 0.08
F48 Painful menstruation 8.1 1.09 (0.3-3.7) 12.1 1.43 (0.6-3.7) 0.33
F49 Irregular menstruation 2.4 0.82 (0.1-8.8) 3.2 0.55 (0.1-5.1) 0.18
F50 Excessive menstrual bleeding 4.0 2.46 (0.4-14) 8.1 2.46 (0.7-8.3) 0.27
F52 Unusual or copious vaginal discharge 0.0    0.0    
M53 Erectile or ejaculatory dysfunction 2.3 1|10   2.3 1|10   0.15
  1. CI: confidence interval; rpbi: point-biserial correlation coefficient with the overall sum of symptoms; F48 to F52: symptoms only for women; M53: symptom only for men; for these groups of symptoms frequencies, positive likelihood and correlations were calculated for the respective groups (124 women and 43 men); whenever the Positive Likelihood ratio [sensibility/(1-specificity)] was not defined the number of somatizers with that symptom is indicated (sensibility) since non-somatizers did not have the symptom (specificity = 1)