Table 4.

Results from cognitive interview think-aloud sessions

		QLQ-C30	CAT
Physical Functioning	Positive	better worded and easier to answer (n = 6):	matches the current physical state better (n = 17):
		“questions are worded more generally”, “more efficient”, “questions are clearly formulated and can be answered without any problems”, “more pleasing”	“aiming at people who are agile and do a lot of sports”, “described activities are more physically demanding”
			better worded and easier to answer (n = 7):
			“you can answer more accurately”, “concrete examples including durationare very helpful”
	Negative	not suitable for current physical state (n = 4): “questions for people with limited mobility”, “better for people who are untrained or out of condition”	not suitable for current physical state (n = 3):
			“have not done this recently due to less physical activity”
		difficult to answer (n = 3): “questions are not formulated clearly”, “questions mean different things to different people”	difficult to answer (n = 1):
			“described activities are very specific”
Emotional Functioning	Positive	better worded and easier to answer (n = 3):	highly appropriate and more precise (n = 2)
		“questions are worded more generally”, “exact wording”, “more pleasing”
	Negative	–	too extreme for current emotional condition: “dramatizes”, “sounds like being suicidal” (n = 3)