. Author manuscript; available in PMC: 2014 Jan 1.

Published in final edited form as: Value Health. 2012 Nov 30;16(1):97–103. doi: 10.1016/j.jval.2012.08.2207

Table 3.

Profile Means for K Means Cluster Analysis

	Cluster 1	Cluster 2	Cluster 3	Cluster 4
Pain-severity	3.97	5.01	7.28	1.75
Pain-frequency	9.22^a	4.29	8.72^a	3.27
Bloating	3.85^a	6.11	7.53	2.97^a
Bowel dissatisfaction	8.97^a	7.16	8.94^a	8.28^a
Life interference	7.11^a	6.61^b	8.11^a	6.34^b
Percent of cases	25.5%	19.4%	18.4%	36.7%
UCLA severity mean	5.56^a	5.86^a	7.19	4.41

Notes: Within a row, cluster means are statistically significantly different at p < 0.05 if they do not share a common superscript; The UCLA severity scale was not a formal part of the cluster analysis. The mean values as a function of cluster are reported here for their interest value.