Longitudinal variations of sleep quality in women with breast cancer

This longitudinal study included 107 women assisted at a teaching hospital. The following instruments were used: Questionnaire on Socio-demographic and Clinical Characteristics; Pittsburgh Sleep Quality Index; Beck Depression Inventory; and Herth Hope Scale. Data were collected at T0, before tumor removal surgery, and after surgery at T1 (average of 3.2 months), T2 (average of 6.1 months), and T3 (average of 12.4 months).

Results:

Poor sleep quality persisted over the follow-up; hope increased at T1; the proportion of women with moderate and severe depression increased at T3. There was a significant correlation among scores indicating sleep quality, depression, and hope in all four time points.

Conclusion:

Our study findings suggest the significance of long-term follow-up.

Keywords
Sleep/physiology; Breast neoplasms/complications; Hope/physiology; Depression/physiology; Quality of life

Instrument scores		T0			T1			T2			T3		p value
Instrument scores	A	SD	M	A	SD	M	A	SD	M	A	SD	M	p value
BDI^* * Beck Depression Inventory;	11.2	9.2	9.0	10.8	10.1	8.0	12.5	11.2	10.0	15.7	10.2	18.0	0.0038
HHS^† † Herth Hope Scale;	34.6	6.4	35.0	36.6	7.9	39.0	36.0	7.6	36.0	36.0	7.5	38.0	0.0460
PSQI-PT^‡ ‡ Pittsburgh Sleep Quality Index; p-value resulting from Friedman test.	07.1	4.4	7.0	7.4	4.8	7.0	7.4	4.7	7.0	7.2	4.3	7.0	0.6563

Instrument scores		PSQI-PT				BDI
Instrument scores	T0	T1	T2	T3	T0	T1	T2	T3
BDI - T0	0.400^* * p value <0.001;				1.000
BDI - T1		0.423^* * p value <0.001;				1.000
BDI - T2			0.459^* * p value <0.001;				1.000
BDI - T3				0.567^* * p value <0.001;				1.000
HHS - T0	-0.229^† † p value < 0.05;				-0.414^* * p value <0.001;
HHS - T1		-0.255^‡ ‡ p value <0.01; Spearman test				-0.486^* * p value <0.001;
HHS - T2			-0.402^* * p value <0.001;				-0.613^* * p value <0.001;
HHS - T3				-0.260^‡ ‡ p value <0.01; Spearman test				-0.337^* * p value <0.001;

Escola Paulista de Enfermagem, Universidade Federal de São Paulo R. Napoleão de Barros, 754, 04024-002 São Paulo - SP/Brasil, Tel./Fax: (55 11) 5576 4430 - São Paulo - SP - Brazil
E-mail: actapaulista@unifesp.br

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[1] Corresponding author Thalyta Cristina Mansano-Schlosser Tessália Vieira de Camargo street, 126, 13083-887, Campinas, SP, Brazil. mansanothalyta@gmail.com