Scale	Participants that reported at least one item of the scale (N)		Quality of life summary score at inclusion [SD]
Physical functioning	Yes	138	78.00 [12.63]
	No	59	90.95 [8.44]
Role functioning	Yes	90	74.20 [11.71]
	No	107	88.33 [10.16]
Emotional functioning	Yes	147	79.41 [12.56]
	No	50	89.14 [11.38]
Cognitive functioning	Yes	116	76.98 [13.08]
	No	81	88.88 [9.01]
Unspecified psychologic functioning	Yes	187	81.07 [12.78]
	No	10	96.99 [3.77]
Social functioning	Yes	120	76.00 [12.38]
	No	77	91.03 [7.33]
Body image	Yes	88	77.25 [13.23]
	No	109	85.61 [11.50]
Pain	Yes	102	76.59 [13.23]
	No	95	87.55 [9.96]
Fatigue	Yes	158	78.60 [12.29]
	No	39	95.15 [4.09]
Upper gastrointestinal tract	Yes	55	71.62 [12.34]
	No	142	85.85 [10.87]
Lower gastrointestinal tract	Yes	124	77.90 [13.20]
	No	73	88.64 [9.28]
Unspecified gastrointestinal tract	Yes	157	79.86 [12.92]
	No	40	89.80 [9.75]
(non‐)Stoma‐related bowel symptoms	Yes	150	80.41 [12.95]
	No	45	87.65 [10.94]
Urinary tract	Yes	160	80.86 [12.60]
	No	37	86.29 [13.74]
Chemotherapy‐related	Yes	115	77.68 [13.19]
	No	81	88.05 [9.79]
Sexual‐related (men)	Yes	87	83.96 [12.51]
	No	17	85.67 [10.15]
Sexual‐related (women)	Yes	51	82.25 [10.80]
	No	41	75.12 [15.26]
Single items
Have you lacked appetite?	Yes	55	69.18 [12.01]
	No	142	86.79 [9.54]
Were you short of breath?	Yes	66	73.91 [12.48]
	No	131	85.89 [11.26]
Have you had fevers?	Yes	19	72.56 [14.25]
	No	177	82.83 [12.47]
Have you felt unwell?	Yes	101	74.54 [12.43]
	No	96	89.60 [8.15]

Abbreviation: SD, standard deviation.