Observational Study
Copyright ©The Author(s) 2017.
World J Gastroenterol. Mar 14, 2017; 23(10): 1891-1898
Published online Mar 14, 2017. doi: 10.3748/wjg.v23.i10.1891
Table 1 Sociodemographic and clinical characteristics of the patients (n = 356) n (%)
CharacteristicsNo. of patients1
Age (yr, mean ± SD)54.5 ± 13.5
Sex3412
Male213 (62.5)
Female128 (37.5)
Educational status3412
Junior high school182 (53.4)
Senior high school107 (31.4)
University47 (13.8)
Postgraduate and above5 (1.5)
Marital status3402
Single5 (1.5)
Married334 (98.2)
Divorced1 (0.3)
Employment3432
Yes268 (78.1)
No75 (21.9)
Location of tumor3422
Colon193 (56.4)
Rectum147 (43.0)
Both2 (0.6)
Metastasis3432
Yes102 (29.7)
No215 (62.7)
Unknown26 (7.6)
Time from first diagnosis (wk) Median (interquartile range)16.0 (33.8)
Table 2 Item convergent and discriminant validity for the EORTC QLQ-CR29 scales, and for patients with and without a stoma
QLQ-CR29 scalesTotal sample (n = 354)1
Without a stoma (n = 298)
With a stoma (n = 56)
ConvergentDiscriminantαConvergentDiscriminantαConvergentDiscriminantα
Urinary frequency0.589-0.9230.004-0.3060.4060.588-0.9240.002-0.3210.3630.587-0.9190.017-0.3330.608
Blood or mucus in stools0.794-0.8860.004-0.7120.6410.790-0.8910.002-0.7380.6380.815-0.8290.037-1.0000.632
Stool frequency0.689-0.9650.003-0.6410.6790.696-0.9670.001-0.6690.7160.645-0.9570.003-0.3890.423
Body image0.628-0.8260.060-0.4050.7150.614-0.8390.039-0.4220.7180.703-0.7920.004-0.5040.676
Table 3 Correlations between the EORTC QLQ-CR29 and the QLQ-C30
EORTC-QLQ-C30
QOLPFRFEFCFSFFANVPADYSLAPCODIFI
CR29 scales
Urinary frequency0.004-0.071-0.111a-0.083-0.163b-0.159b0.107a-0.130a-0.033-0.0460.0610.023-0.131a-0.0220.063
Blood and mucus in stool-0.412b-0.320b-0.074-0.091-0.166b0.0770.296b0.383b0.451b0.166b0.190b0.120a0.321b0.526b-0.141a
Stool frequency-0.322b-0.236b-0.075-0.132a-0.115a-0.0260.268b0.340b0.349b0.212b0.188b0.120a0.247b0.492b-0.113a
Body image0.254b0.179b-0.0520.0510.100-0.172b-0.303b-0.485b-0.363b-0.251b-0.185b-0.279b-0.240b-0.224b0.132a
CR29 single items
Urinary incontinence0.0840.0400.237b0.203b-0.0710.171b-0.0380.270b0.125a0.311b0.0800.0400.135a0.139b-0.291b
Dysuria0.0320.1010.223b0.210b-0.185b0.288b0.0530.330b0.272b0.296b0.133a0.0030.279b0.158b-0.294b
Abdominal pain-0.357b-0.399b-0.149b-0.086-0.245b0.0970.411b0.342b0.648b0.321b0.307b0.241b0.375b0.381b-0.118a
Buttock pain-0.114a-0.1050.129a0.056-0.138a0.271b0.131a0.487b0.343b0.224b0.178b0.139b0.278b0.160b-0.273b
Bloating-0.261b-0.233b-0.277b-0.302b-0.129a-0.206b0.213b0.0800.240b0.130a0.221b0.183b0.207b0.252b0.125a
Dry mouth-0.117a-0.0740.181b0.120a-0.1040.216b0.152b0.321b0.262b0.358b0.134a0.110a0.218b0.122a-0.163b
Hair loss-0.112a-0.0850.167b0.037-0.131a0.222b0.184b0.486b0.286b0.276b0.108a0.127a0.232b0.155b-0.200b
Taste-0.218b-0.238b-0.214b-0.278b-0.222b-0.107a0.266b0.137a0.1020.0880.294b0.459b0.0130.163b0.083
Anxiety-0.233b-0.147b-0.425b-0.547b-0.033-0.412b0.150b-0.272b-0.103-0.0950.0110.134a-0.0890.0660.449b
Weight-0.217b-0.266b-0.346b-0.371b-0.175b-0.244b0.287b0.0420.1030.0260.202b0.287b0.0050.184b0.306b
Flatulence-0.057-0.0940.170b0.039-0.115a0.159b0.0920.433b0.206b0.180b0.106a0.180b0.200b0.236b-0.166b
Fecal incontinence-0.017-0.0320.275b0.218b-0.129a0.320b0.0490.447b0.284b0.252b0.163b0.0550.229b0.257b-0.350b
Sore skin-0.052-0.132a0.208b0.170b-0.0940.296b0.0810.497b0.205b0.130a0.160b0.123a0.106a0.194b-0.271b
Embarrassment-0.049-0.0410.200b0.085-0.0190.209b0.0360.317b0.167b-0.0060.0270.0590.0700.088-0.209b
Stoma care problems-0.1840.2100.224-0.2540.0440.064-0.0250.019-0.033-0.265-0.0590.007-0.1610.0730.175
Sexual interest (men)-0.108-0.177a-0.0510.041-0.276b-0.184b0.142a-0.0890.0510.1190.1120.004-0.0100.0390.092
Impotence-0.026-0.1020.189b0.177a-0.212b0.243b0.1050.242b0.0820.155a0.175a0.157a0.0690.093-0.256b
Sexual interest (women)-0.319b-0.213a-0.0920.030-0.386b-0.0060.091-0.0990.0440.1940.270b0.0560.176-0.0100.215a
Dyspareunia0.0260.0030.213b0.322b-0.1290.258b-0.0940.423b0.1850.227a0.0050.0900.312b0.117-0.193
Table 4 Known group comparisons: scales and items in the QLQ-C30 and CR29 for clinically distinct groups
Stoma (n = 56)No stoma (n = 298)P value1KPS ≤ 80(n = 162)KPS > 80(n = 177)P value1
CR29 scales
Urinary frequency6.5 ± 14.56.1 ± 13.50.8566.7 ± 12.35.8 ± 14.90.098
Blood and mucus in stool18.9 ± 25.910.3 ± 16.30.16013.8 ± 19.77.3 ± 12.70.019
Stool frequency8.0 ± 13.28.4 ± 14.80.96011.2 ± 18.25.1 ± 9.60.017
Body image81.7 ± 18.988.6 ± 14.70.00487.7 ± 17.789.0 ± 11.90.589
CR29 single items
Urinary incontinence7.7 ± 4.21.6 ± 7.1< 0.0010.8 ± 0.74.2 ± 11.10.001
Dysuria7.7 ± 16.85.4 ± 12.30.4443.2 ± 11.28.0 ± 14.7< 0.001
Abdominal pain11.9 ± 21.512.0 ± 18.70.65113.5 ± 21.09.0 ± 16.10.059
Buttock pain10.7 ± 15.75.4 ± 13.20.0052.5 ± 8.89.0 ± 16.1< 0.001
Bloating16.1 ± 16.820.9 ± 21.40.18325.2 ± 23.915.0 ± 16.6< 0.001
Dry mouth11.9 ± 17.37.2 ± 15.10.0256.0 ± 14.48.0 ± 15.10.170
Hair loss14.3 ± 18.99.6 ± 16.60.0587.7 ± 17.211.1 ± 16.20.010
Taste15.5 ± 22.923.8 ± 21.70.00226.0 ± 25.018.8 ± 18.40.015
Anxiety31.0 ± 31.044.6 ± 23.7< 0.00152.1 ± 22.635.1 ± 24.1< 0.001
Weight22.6 ± 21.244.6 ± 23.70.03232.3 ± 19.921.6 ± 16.8< 0.001
Flatulence14.3 ± 17.85.0 ± 13.4< 0.0014.5 ± 14.67.0 ± 13.60.012
Fecal incontinence15.5 ± 20.14.4 ± 11.9< 0.0012.5 ± 10.28.0 ± 15.1< 0.001
Sore skin26.2 ± 23.53.1 ± 10.1< 0.0013.5 ± 12.79.7 ± 17.5< 0.001
Embarrassment25.0 ± 20.42.3 ± 8.4< 0.0014.1 ± 12.87.1 ± 14.60.019
Stoma care problems///18.8 ± 20.819.8 ± 25.20.941
Sexual interest (men)74.4 ± 23.569.8 ± 25.50.33376.3 ± 22.866.0 ± 26.00.020
Impotence9.4 ± 17.08.5 ± 20.20.3646.5 ± 19.210.7 ± 19.90.021
Sexual interest (women)81.0 ± 17.877.1 ± 22.50.74983.7 ± 16.871.2 ± 25.00.005
Dyspareunia9.5 ± 16.34.3 ± 14.10.1722.7 ± 15.06.5 ± 13.40.012
QLQ-C30 scales
Physical85.5 ± 12.482.9 ± 16.50.33577.6 ± 18.389.4 ± 10.7< 0.001
Role84.8 ± 17.269.4 ± 20.6< 0.00161.7 ± 20.681.2 ± 16.4< 0.001
Emotional80.5 ± 17.774.4 ± 14.00.00169.3 ± 14.481.2 ± 11.9< 0.001
Cognitive79.5 ± 20.580.7 ± 20.00.39775.4 ± 34.985.9 ± 14.6< 0.001
Social60.0 ± 22.445.7 ± 25.5< 0.00138.5 ± 24.955.7 ± 23.5< 0.001
Overall quality of life67.9 ± 21.467.8 ± 17.40.63659.5 ± 16.576.4 ± 14.4< 0.001
Fatigue18.8 ± 18.222.8 ± 19.90.10830.5 ± 20.313.2 ± 13.8< 0.001
Nausea and vomiting11.6 ± 13.86.1 ± 14.4< 0.0014.7 ± 15.78.1 ± 12.5< 0.001
Pain13.0 ± 16.612.0 ± 17.30.42713.3 ± 19.19.4 ± 13.80.211