Table 3

Correlation between individual question items within the IBD-Control instrument and visual analogue scale for disease control (IBD-Control-VAS) and disease-specific quality of life total score measured using the UK-IBD-QoL questionnaire

Q1a… your IBD has been well controlled in the past 2 weeks*0.700.63
Q1b… your current treatment is useful in controlling your IBD*0.390.38
Q2… have your bowel symptoms been getting better, getting worse or not changed0.360.24
Q3a… miss any planned activities because of IBD*0.630.67
Q3b… wake up at night because of symptoms of IBD*0.610.67
Q3c… suffer from significant pain or discomfort*0.640.66
Q3d… often feel lacking in energy (fatigued)*0.510.63
Q3e… feel anxious or depressed because of your IBD*0.580.70
Q3f... think you need a change to your treatment*0.600.50
Q4a… would you like to discuss alternative types of drug0.420.26
Q4b… would you like to discuss ways to adjust your own treatment0.330.31
Q4c… would you like to discuss side effects or difficulties with your medicines0.240.29
Q4d… would you like to discuss new symptoms that have developed0.300.29
  • Item responses were scored as 0 (worst option), 1 (intermediate, eg, ‘Not sure’) or 2 (best option), so a higher score should indicate better disease control. Correlation coefficients are expressed as Spearman's ρ values (p<0.01 in all cases).

  • *Question items included in the IBD-Control-8 subscore.

  • IBD, inflammatory bowel disease; QoL, quality of life.