Translation and validation of the Chinese version of the menstrual distress questionnaire

Figures & data

Figure 1. Translation process following Jones’ Translation Model. Ch1: Chinese version 1; Ch2: Chinese version 2; Ch3: Chinese version 3; Ch4: Chinese version 4; BET1: first backward English translation; BET2: second backward English translation; BET3: third backward English translation; BET4: fourth backward English translation; GD: group discussion.

Figure 2. Flow diagram for recruitment of participants to test for validity and reliability of the Chinese version of the Menstrual Distress Questionnaire Form Cycle.

Table 1. Demographic characteristics of the 210 subjects.

	mean (SD)	n (%)
Age (years)	25.7 (4.8)
Education in years	16.5 (2.1)
High school		1 (0.5)
University		202 (96.2)
Graduate school		6 (2.9)
Marital status
Married		13 (6.2)
Unmarried		197 (93.8)
Children
0		200 (95.2)
1		6 (2.9)
2		2 (1.0)
3		2 (1.0)
The interval of the menstrual cycle (days)	30.3 (2.9)
Duration of the menstrual cycle (days)	5.8 (1.1)

SD = standard deviation.

Table 2. Validity of the MDQCC (N = 210).

		Validity
Scale	Item	ICC (95% CI) for construct validity	CR for convergent validity
P	1-6	0.745 (0.651 − 0.812)	0.303
WR	7-10	0.667 (0.581 − 0.737)	0.726
AR	11-14	0.735 (0.671 − 0.789)	0.792
NA	15-22	0.897 (0.867 − 0.921)	0.881
IC	23-30	0.858 (0.822 − 0.888)	0.703
BC	31-35	0.829 (0.781 − 0.868)	0.715
A	36-40	0.756 (0.700 − 0.805)	0.843
C	41-46	0.650 (0.572 − 0.718)	0.498

ICC = intraclass correlation coefficient; CI = confidence interval; CR = composite reliability; P = pain; WR = water retention; AR = autonomic reactions; NA = negative affect; IC = impaired concentration; BC = behaviour change; A = arousal; C = control.

Table 3. Reliabilities including internal consistency and test-retest reliability of the MDQCC (N = 210).

		Reliability
Scale	Item	Cronbach’s α for internal consistency	ICC (95% CI) for test-retest reliability
P	1-6	0.798	0.898 (0.798 − 0.949)
WR	7-10	0.686	0.806 (0.614 − 0.902)
AR	11-14	0.738	0.906 (0.812 − 0.952)
NA	15-22	0.913	0.751 (0.512 − 0.873)
IC	23-30	0.874	0.761 (0.530 − 0.879)
BC	31-35	0.847	0.663 (0.328 − 0.831)
A	36-40	0.762	0.637 (0.274 − 0.818)
C	41-46	0.653	0.660 (0.322 − 0.829)

ICC = intraclass correlation coefficient; CI = confidence interval; P = pain; WR = water retention; AR = autonomic reactions; NA = negative affect; IC = impaired concentration; BC = behaviour change; A = arousal; C = control.

Data availability statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.