Table 3. Mean scores, percentages of floor and ceiling, and Cronbach’s alpha coefficients of each subscale/item in the standard Chinese version of the EORTC QLQ-C30 among patients completed questionnaires prior to their first cycle of treatment (T1) and patients completed questionnaires on the last day of the first cycle of treatment (T2) (T1: n=143, T2: n=142).

	Item no.*	Mean (Standard Deviation)		Floor (%)		Ceiling (%)		Cronbach’s alpha coefficient†
		T1	T2	T1	T2	T1	T2	T1	T2
Functioning scales‡
Physical (PF)	1 to 5	73.8 (22.0)	67.7 (22.6)	1	2	11	6	0.80	0.82
Role (RF)	6, 7	66.0 (32.7)	55.6 (34.0)	9	15	32	20	0.87	0.91
Emotional (EF)	21 to 24	68.2 (24.9)	68.2 (25.2)	2	4	18	17	0.81	0.85
Cognitive (CF)	20, 25	74.4 (25.8)	73.6 (25.9)	4	4	11	33	0.49	0.55
Social (SF)	26, 27	60.1 (29.4)	55.5 (30.5)	6	10	18	14	0.71	0.76
Global health/QOL (QL)‡	29, 30	58.3 (24.0)	51.5 (22.2)	4	4	6	2	0.85	0.93
Symptom scales/items§
Fatigue (FA)	10, 12, 18	42.4 (26.9)	48.3 (26.2)	9	5	5	8	0.83	0.83
Nausea and vomiting (NV)	14, 15	15.7 (23.3)	28.1 (30.3)	57	38	2	6	0.82	0.89
Pain (PA)	9, 19	28.4 (30.1)	33.9 (29.6)	34	22	4	6	0.79	0.75
Dyspnea (DY)	8	34.7 (32.1)	34.3 (29.7)	34	32	10	6	-	-
Sleep disturbance (SL)	11	40.1 (30.4)	41.1 (31.9)	25	25	8	12	-	-
Appetite loss (AP)	13	34.3 (33.1)	47.4 (32.8)	39	21	8	15	-	-
Constipation (CO)	16	25.4 (31.0)	32.2 (35.4)	52	46	6	11	-	-
Diarrhea (DI)	17	14.0 (22.2)	16.7 (26.3)	68	66	0	1	-	-
Financial impact (FI)	28	52.2 (33.7)	54.2 (33.4)	18	18	20	20	-	-

* The numerals correspond to the item numbers in the questionnaire.

^† Cronbach’s alpha coefficients > 0.70 indicate adequate scale internal consistency.

^‡ Scores range from 0 to 100. The higher scores represent higher levels of functioning and global quality of life (QOL).

^§ Scores range from 0 to 100. The higher scores represent higher levels of symptoms or problems.