Propriedades psicométricas do Inventário de Crescimento Pós-Traumático em uma amostra de estudantes universitários brasileiros

Silva, Thiago Loreto Garcia da; Ramos, Victoria Guimarães; Donat, Julia Candia; Oliveira, Fernando Rainho de; Gauer, Gustavo; Kristensen, Christian Haag

doi:10.1590/2237-6089-2017-0050

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Trends in Psychiatry and Psychotherapy

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Original Article • Trends Psychiatry Psychother. 40 (4) • Oct-Dec 2018 • https://doi.org/10.1590/2237-6089-2017-0050 copiar

Propriedades psicométricas do Inventário de Crescimento Pós-Traumático em uma amostra de estudantes universitários brasileiros

Autoria SCIMAGO INSTITUTIONS RANKINGS

Resumo

Objetivo:

O objetivo deste estudo é examinar as propriedades psicométricas da versão brasileira do Inventário de Crescimento Pós-Traumático (Posttraumatic Growth Inventory - PTGI).

Método:

Foram avaliados 300 estudantes universitários através de instrumentos que investigaram histórico de trauma, sintomas pós-traumáticos e de depressão e traços de personalidade através do modelo Big Five. A correlação de Pearson foi utilizada para investigar consistência interna, confiabilidade entre itens e procedimentos de validade de construto. Análise de componentes principais e análise de fatores confirmatórios foram realizadas para investigar a estrutura fatorial do PTGI.

Resultados:

Os resultados confirmaram a estrutura original de cinco fatores. Os resultados mostraram boa consistência interna para a escala total (α = 0.91) e suas subescalas, variando de α = 0.85 a α = 0.70. Além disso, evidências de validade de construto e convergente foram observadas através de correlações com sintomas pós-traumáticos e de depressão e medidas de personalidade.

Conclusões:

Os resultados preliminares sugerem que o PTGI brasileiro é confiável e apresentou evidência de validade adequada.

Descritores:
Trauma psicológico; transtornos de estresse; póstraumático; estudos de validação; psicometria

Characteristic		n	%
Sex
	Male	104	34.7
	Female	196	65.3
Medication intake		14	4.6
	Antidepressants	5	1.6
	Anxiolytics	2	0.6
	Anticonvulsants	4	1.3
	Antipsychotics	1	0.3
	Stimulants	4	1.3
	Two or more types of medication	3	1
Relationship status
	Single	255	85
	Married	36	12
	Divorced	9	3
Ethnicity/race
	Caucasian	276	92
	Afro-descendent	16	5.3
	Other	8	2.7
Socioeconomic status
	Middle	162	54
	Upper	72	24
	Low	66	22
Age (years), mean (SD)		23.9	6.8
Years of study, mean (SD)		14	2.5

		Factor loadings
Items and factors		I	II	III	IV	V
Factor I: Relating to others (16.9% of variance)
	6 - I more clearly see that I can count on people in times of trouble.	0.62				0.49
	8 - I have a greater sense of closeness with others.	0.68
	9 - I am more willing to express my emotions.	0.71
	15 - I have more compassion for others.	0.56
	16 - I put more effort into my relationships.	0.48
	20 - I learned a great deal about how wonderful people are.	0.62
	21 - I better accept needing others.	0.73
Factor II: New possibilities (16.6% of variance)
	1 - I changed my priorities about what is important in life.		0.51			0.48
	3 - I developed new interests.		0.82
	4 - I have a greater feeling of self-reliance.		0.53	0.44
	7 - I established a new path for my life.		0.82
	11 - I am able to do better things with my life.		0.56
	14 - New opportunities are available which wouldn't have been otherwise.		0.69
	17 - I am more likely to try to change things which need changing.		0.54
Factor III: Personal strength (10.8% of variance)
	10 - I know better that I can handle difficulties.			0.86
	12 - I am better able to accept the way things work out.			0.79
	19 - I discovered that I'm stronger than I thought I was.			0.53
Factor IV: Spiritual change (10.1% of variance)
	5 - I have a better understanding of spiritual matters.				0.82
	18 - I have a stronger religious faith.				0.86
Factor V: Appreciation of life (10.1% of variance)
	2 - I have a greater appreciation for the value of my own life.					0.77
	13 - I can better appreciate each day.					0.62

	1	2	3	4	5	6	7	8	9	10	11
1. BDI - Total	–
2. PTGI - Total	0.021	–
3. Extroversion	-0.11^* * 0.05 (1-tailed) and	0.04	–
4. Socialization	-0.19^† † 0.01 (1-tailed).	0.28^† † 0.01 (1-tailed).	-0.003	–
5. Conscientiousness	-0.20^† † 0.01 (1-tailed).	0.21^† † 0.01 (1-tailed).	-0.04	0.34^† † 0.01 (1-tailed).	–
6. Neuroticism	0.64^† † 0.01 (1-tailed).	-0.10	-0.15^† † 0.01 (1-tailed).	-0.18^† † 0.01 (1-tailed).	-0.11^* * 0.05 (1-tailed) and	–
7. Openness to experience	-0.02	0.10	0.15^† † 0.01 (1-tailed).	0.06	-0.04	-0.06	–
8. PTGI - New possibilities	0.14^* * 0.05 (1-tailed) and	0.81^† † 0.01 (1-tailed).	0.07	0.17^† † 0.01 (1-tailed).	0.10	-0.07	0.17^† † 0.01 (1-tailed).	–
9. PTGI - Personal strength	-0.12^* * 0.05 (1-tailed) and	0.70^† † 0.01 (1-tailed).	0.006	0.20^† † 0.01 (1-tailed).	0.56^† † 0.01 (1-tailed).	-0.16^† † 0.01 (1-tailed).	0.09	0.46^† † 0.01 (1-tailed).	–
10. PTGI - Appreciation of life	-0.001	0.71 ^† † 0.01 (1-tailed).	-0.01	0.24^† † 0.01 (1-tailed).	0.17^† † 0.01 (1-tailed).	-0.06	0.03	0.43^† † 0.01 (1-tailed).	0.48^† † 0.01 (1-tailed).	–
11. PTGI - Spiritual change	0.05	0.58^† † 0.01 (1-tailed).	0.09	0.14^* * 0.05 (1-tailed) and	0.19^† † 0.01 (1-tailed).	-0.06	0.04	0.36^† † 0.01 (1-tailed).	0.31^† † 0.01 (1-tailed).	0.41^† † 0.01 (1-tailed).	–
12. PTGI - Relation to others	0.005	0.87^† † 0.01 (1-tailed).	0.01	0.26^† † 0.01 (1-tailed).	0.22^† † 0.01 (1-tailed).	-0.03	0.06	0.60^† † 0.01 (1-tailed).	0.53^† † 0.01 (1-tailed).	0.57^† † 0.01 (1-tailed).	0.42^† † 0.01 (1-tailed).

Associação de Psiquiatria do Rio Grande do Sul Av. Ipiranga, 5311/202, 90610-001 Porto Alegre RS/ Brasil, Tel./Fax: (55 51) 3024 4846 - Porto Alegre - RS - Brazil
E-mail: trends@aprs.org.br

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[1] Correspondence: Christian Haag Kristensen, Av. Ipiranga, 6681, Prédio 11, Sala 910 90619-900 - Porto Alegre, RS - Brazil Tel.: +55 (51) 33534898 E-mail: christian.kristensen@pucrs.br