Psychometric Properties of the Persian Version of Mental Health Literacy Scale

Figures & data

Table 1 A Profile of the Subjects (n = 992)

Variables	Total N (%)
Child’s birth order
1	520 (52.40)
2	374 (37.70)
3	78 (7.90)
≥4	20 (2.00)
Number of family members
2	9 (0.90)
3	200 (20.20)
4	595 (60.00)
≥5	188 (19.00)
Occupation
Housewife	820 (82.70)
Employed	172 (17.30)
Literacy level
Primary education	82 (8.30)
Secondary education	216 (21.80)
Diploma	469 (47.30)
University	225 (22.70)
Economic status
Very good	38 (3.80)
Good	234 (23.60)
Moderate	631 (63.60)
Low	78 (7.90)
Very low	11 (1.10)
Ability to identify children’s mental problems
Very good	363 (36.60)
Good	367 (37.00)
Moderate	182 (18.30)
Low	59 (5.90)
Very low	21 (2.10)
Ability to identify resources for help search
Very good	292 (29.40)
Good	396 (39.90)
Moderate	207 (20.90)
Low	81 (8.20)
Very low	16 (1.60)

Table 2 Factor Structure of the Persian Mental Health Literacy Scale (n = 496)

Items	F1	F5	F3	F4	F2
MHL4	0.67
MHL7	0.66
MHL6	0.65
MHL2	0.61
MHL5	0.61
MHL1	0.57
MHL3	0.54
MHL13	0.51
MHL8	0.51
MHL11	0.38
MHL9	0.37
MHL31		0.83
MHL32		0.77
MHL30		0.71
MHL33		0.59
MHL29		0.54
MHL35		0.52
MHL34		0.43
MHL24		0.32
MHL23		0.30
MHL19			0.70
MHL18			0.60
MHL17			0.56
MHL16			0.52
MHL28				0.63
MHL27				0.55
MHL26				0.48
MHL25				0.43
MHL15					0.41
MHL14					0.38

Abbreviations: F1, ability to recognize mental disorders; F2, confidentiality of mental health practitioners; F3, skills of mental health information seeking; F4, beliefs about mental illnesses; F5, attitudes toward patient with mental illness.

Table 3 A Summary of the Characteristics of the Factors (n = 992)

Factors (Subscales)	Number of Items	Range	Mean (SD)	Kurtosis	Skewness	Floor Effect (%)	Ceiling Effect (%)	Cronbach ɑ
F1	11	11–44	28.59 (5.77)	−0.06	−0.01	0.20	0.50	0.82
F2	9	9–45	20.24 (5.61)	−0.31	0.32	0.00	0.00	0.62
F3	4	4–20	13.77 (3.17)	0.36	−0.55	1.00	2.20	0.72
F4	4	4–20	16.04 (2.66)	1.47	−0.78	0.20	9.80	0.61
F5	2	2–8	4.79 (1.68)	−0.68	0.02	12.90	7.10	0.80

Table 4 The Confirmatory Factor Analysis Indices of the Persian Mental Health Literacy Scale (n = 496)

Measure	TLI	SRMSR	CFI	RMSEA
MHLS	0.91	0.05	0.92	0.04

Abbreviations: TLI, Tucker–Lewis index; SRMSR, standardized root-mean-square residual; CFI, comparative fit index; RMSEA, root-mean-square error of approximation.

Figure 1 Confirmatory factor analysis of the five-factor model of the P-MHLS.

Table 5 IRT Calibration Results of the Persian Mental Health Literacy Scale Item Bank (N= 992)

Item-ID	Mean (SD)	Item-Total Correlation	Cronbach’s Alpha If Deleted	IRT
				Item Discrimination	B1	B2	B3	B4
MHL1	2.50 (0.86)	0.30	0.73	1.26	−1.91	−0.07	2.04	—
MHL2	2.65 (0.84)	0.32	0.73	1.46	−2.06	−0.38	1.60	—
MHL3	2.79 (0.89)	0.31	0.73	1.14	−2.48	−0.65	1.31	—
MHL4	2.56 (0.86)	0.36	0.73	1.60	−1.74	−0.18	1.64	—
MHL5	2.48 (0.82)	0.35	0.73	1.42	−1.85	−0.05	2.10	—
MHL6	2.38 (0.85)	0.40	0.73	1.76	−1.37	0.09	2.00	—
MHL7	2.37 (0.90)	0.42	0.73	1.61	−1.30	0.18	1.82	—
MHL8	2.38 (1.08)	0.34	0.73	1.13	−0.98	−0.06	1.69	—
MHL9	2.86 (0.89)	0.27	0.73	0.84	−3.09	−1.12	1.50	—
MHL10	2.46 (0.87)	0.05	0.74	0.29	−6.78	0.54	6.69	—
MHL11	2.93 (0.84)	0.25	0.73	0.80	−3.67	−1.45	1.48	—
MHL12	2.68 (0.88)	0.07	0.74	0.32	−7.00	−1.17	4.58	—
MHL13	2.68 (0.89)	0.38	0.73	1.23	−2.02	−0.55	1.62	—
MHL14	2.38 (0.99)	0.18	0.74	0.45	−2.88	0.31	4.15	—
MHL15	2.42 (0.98)	0.11	0.74	0.34	−4.05	0.36	5.16	—
MHL16	3.24 (1.04)	0.29	0.73	0.57	−4.76	−2.33	0.34	4.31
MHL17	3.36 (1.11)	0.23	0.74	0.47	−5.59	−2.70	−0.38	4.34
MHL18	3.63 (1.08)	0.25	0.73	0.60	−4.96	−2.90	−1.22	2.56
MHL19	3.54 (1.04)	0.23	0.74	0.53	−5.85	−3.04	−1.07	3.53
MHL20	2.33 (1.08)	0.10	0.75	−0.16	7.60	−3.97	−10.07	−19.71
MHL21	2.95 (1.17)	0.10	0.74	−0.06	38.43	6.42	−9.93	−39.88
MHL22	3.55 (1.09)	0.14	0.74	0.35	−9.24	−4.27	−1.10	4.11
MHL23	3.20 (1.11)	0.18	0.74	−0.07	36.74	14.70	−4.12	−29.52
MHL24	3.58 (1.15)	0.32	0.73	0.26	−11.21	−5.38	−1.72	4.67
MHL25	3.89 (0.95)	0.17	0.74	0.25	−14.82	−9.43	−4.38	4.25
MHL26	3.74 (1.17)	0.18	0.74	0.33	−9.33	−4.31	−2.68	2.63
MHL27	4.29 (0.86)	0.28	0.73	0.61	−6.57	−5.06	−3.86	0.28
MHL28	4.12 (0.91)	0.29	0.73	0.54	−7.19	−5.22	−3.01	0.99
MHL29	2.56 (1.10)	0.28	0.73	−0.03	41.54	2.81	−41.20	−99.04
MHL30	2.35 (1.16)	0.36	0.73	0.04	−17.86	6.71	29.62	78.93
MHL31	2.25 (1.10)	0.34	0.73	−0.04	19.82	−10.57	−43.89	−108.40
MHL32	1.94 (1.02)	0.26	0.73	−0.17	1.54	−5.86	−13.90	−25.27
MHL33	1.33 (0.66)	0.16	0.74	−0.28	−4.08	−9.06	−16.43	−20.74
MHL34	1.35 (0.74)	0.07	0.74	−0.34	−3.77	−6.48	−11.48	−15.03
MHL35	1.66 (0.90)	0.21	0.74	−0.15	−1.58	−11.24	−19.29	−34.64

Note: The first option to answer each question in the GRM model is as a reference category.

Abbreviations: MHL, mental health literacy; IRT, item response theory; GRM, graded response model.