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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Biol Res Nurs. 2014 Jan 24;16(4):368–377. doi: 10.1177/1099800413520486

Table 1.

Demographics, IBS, Pain, and Psychological Symptoms of Healthy Control (HC) and Women with Irritable Bowel Syndrome (IBS) Groups

HC (n = 20) IBS (n = 20) P-valuea
Demographic characteristics
 Age, M (SD) 27.6 (5.5) 27.4 (6.6) .940
 White race, % 75% 75% 1.00
 College Degree, % 90% 65% .127
Duration of IBS, n (%)
  < 5 years 4 (20%)
  5 – 9 years 7 (35%)
  ≥10 years 9 (45%)
Recalled symptoms, M (SD)b
 GI symptoms
 Abdominal pain severity over 3 mo. 2.8 (0.5)
  Pain Impact 2.9 (1.0)
  Pain Behaviors 2.3 (0.9)
 Psychological symptoms
  BSI - Global Severity Index 0.10 (0.10) 0.32 (0.26) .001
   Anxiety 0.12 (0.13) 0.37 (0.39) .007
   Depression 0.10 (0.17) 0.38 (0.54) .032
Daily symptoms, M (SD)c
 GI symptoms
  Abdominal pain or discomfort 4.0 (9.8) 28.0 (22.4) <.001
  Lower GI symptoms 1.1 (2.6) 22.8 (16.0) <.001
  Upper GI symptoms 0.6 (2.1) 7.2 (11.2) .014
 Somatic pain symptoms 1.1 (3.1) 3.7 (3.6) .017
 Psychological symptoms and fatigue, M(SD)
  Anxiety 1.2 (2.9) 17.1 (20.2) .001
  Depressed 0.4 (1.9) 7.5 (13.8) .029
  Stressed 6.5 (17.2) 19.3 (20.2) .037
  Fatigue 5.9 (13.4) 19.7 (17.7) .009

Note. HC = Healthy Controls; IBS = Irritable Bowel Syndrome; BSI = Brief Symptom Inventory; GI = Gastrointestinal. Of the recalled symptoms abdominal pain severity was recalled over 3 months; Pain Impact and Pain Behaviors are measures from the Patient-Reported Outcomes Measurement Information System (PROMIS - short forms) and were recalled over 7 days. Psychological distress symptoms recalled over 7 days. Daily symptoms were recorded each evening, and are summarized for each person as the percent of days with moderate to very severe symptom severity.

a

t-test.