Translation into Portuguese language (Brazil), transcultural adaptation and validation of the quality of life questionnaire in female pattern hair loss (WAA-QoL-BP)

Shimizu, Gisele Keiko Machado; Wedy, Gláucia Ferreira; Schaefer, Luiza Vasconcelos; Ramos, Paulo Müller; Miot, Hélio Amante

doi:10.1590/abd1806-4841.20187452

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Investigation • An. Bras. Dermatol. 93 (5) • Sep-Oct 2018 • https://doi.org/10.1590/abd1806-4841.20187452 copy

Translation into Portuguese language (Brazil), transcultural adaptation and validation of the quality of life questionnaire in female pattern hair loss (WAA-QoL-BP)^* * Work conducted at the Department of Dermatology and Radiotherapy, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu (SP), Brazil.

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract:

Background:

Female pattern hair loss (FPHL) is a common complaint in adult women and inflicts major impact in quality of life, however, there is no specific questionnaire available in Portuguese for such evaluation.

Objectives:

Translation into Brazilian Portuguese, cultural adaptation and validation of the WAA-QoL (Women's Androgenetic Alopecia Quality of Life Questionnaire).

Methods:

Methodological study. After authorization by the author, cultural (linguistic) translation and adaptation to Portuguese of the WAA-QoL questionnaire were carried out. The translated version (WAA-QoL-BP) and DLQI (Dermatology Life Quality index) were submitted to patients with FPHL for concurrent validation. Twenty patients were reevaluated to assess temporal stability.

Results:

A total of 116 patients with APF were evaluated, the mean age (SD) was 47 (14) years, and 89 (76%) patients were classified as grades II and III (Sinclair). There was high internal consistency: Cronbach´s alpha was 0.97 for the WAA-QoL-BP and 0.87 for the DLQI. The correlation between WAA-QoL and DLQI resulted in (rho) 0.81 (p <0.01). The intraclass correlation coefficient for complete agreement of WAA-QoL-BP was 0.95 (p <0.01) in the test-retest comparison.

Study Limitations:

Sampling of patients only from the State of São Paulo.

Conclusions:

A Brazilian version for WAA-QoL was translated and adapted, which proved to be valid and consistent.

Keywords:
Alopecia; Health impact assessment; Indicators of quality of life; Quality of life; Sickness impact profile; Surveys and questionnaires; Validation studies; Women

Variables	Values
Age^* (years)	47 (14)
BMI^* (kg/m²)	26.7 (4.7)
Menarche^* (years)	12.7 (1.5)
Schooling^**
Primary and Middle	23 (20)
High school	25 (22)
University	68 (58)
Phototype^**
I-II	46 (40)
III-IV	66 (57)
V-VI	4 (3)
First-degree relative^**	45 (90)
Current smoking^**	3 (3)
Pregnancies^***	2 (0-3)
Menopause^**	48 (41)
Clinical scale (Sinclair)^**
I	8 (7)
II	41 (35)
III	48 (41)
IV	13 (11)
V	9 (8)
DLQI-BRA^***	6 (2-11)
WAA-QoL-BP^***	58 (32-73)

	Q2	Q3	Q4	Q5	Q6	Q7	Q8	Q9	Q10	Q11	Q12	Q13	Q14	Q15	Q16	TOTAL
Q1	0.44	0.73	0.44 0.64 0.68	0.73	0.66	0.63	0.69	0.62	0.74	0.63	0.60	0.48	0.61	0.63	0.57	0.78
Q2	-	0.42	0.39	0.32	0.36	0.56	0.55	0.41	0.47	0.48	0.44	0.34	0.41	0.39	0.37	0.56
Q3		-	0.74	0.70	0.67	0.74	0.70	0.65	0.70	0.75	0.71	0.57	0.64	0.73	0.60	0.83
Q4			-	0.78	0.77	0.78	0.74	0.65	0.79	0.76	0.74	0.62	0.68	0.71	0.67	0.86
Q5				-	0.84	0.61	0.60	0.57	0.70	0.66	0.61	0.48	0.60	0.61	0.59	0.82
Q6					-	0.63	0.58	0,58	0.69	0.62	0.59	0.48	0.61	0.62	0.58	0.81
Q7						-	0.82	0.67	0.74	0.80	0.75	0.61	0.64	0.64	0.60	0.81
Q8							-	0.74	0.77	0.78	0.81	0.60	0.69	0.69	0.65	0.82
Q9								-	0.72	0.73	0.68	0.64	0.65	0.76	064	0.81
Q10									-	0.80	0.74	0.66	0.68	0.72	0.67	0.87
Q11										-	0.83	0.77	0.66	0.72	0.66	0.86
Q12											-	0.70	0.68	0.72	0.66	0.80
Q13												-	0.56	0.58	0.65	0.72
Q14													-	0.76	0.78	0.78
Q15														-	0.70	0.82
Q16															-	0.77

Variables	Coefficient ß (standard error)	p (value)#
Age (years)	-0.2 (0.3)	0.38
BMI (kg/m²)	0.1 (0.6)	0.93
Schooling		0.02
Primary and middle	5.2 (6.8)
High school	13.6 (5.7)
University	0 (-)
Phototype		0.03
I-II	-2.4 (5.9)
III-IV	-10.6 (5.0)
V-VI	0 (-)
Pregnancies	1.4 (1.8)	0.43
Menopause	2.4 (6.2)	0.70
Clinical scale (Sinclair)	7.3 (2.2)	<0.01

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E-mail: revista@sbd.org.br

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[1] Mailing Address: Hélio Amante Miot E-mail: heliomiot@gmail.com