Aging as a predictor of nursing workload in Intensive Care Unit: results from a Brazilian Sample

Ferretti-Rebustini, Renata Eloah de Lucena; Nogueira, Lilia de Souza; Silva, Rita de Cassia Gengo e; Poveda, Vanessa de Brito; Machado, Selma Pinheiro; Oliveira, Elaine Machado de; Andolhe, Rafaela; Padilha, Katia Grillo

doi:10.1590/S1980-220X2016237503216

Brasil

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ORIGINAL ARTICLE • Rev. esc. enferm. USP 51 • 2017 • https://doi.org/10.1590/S1980-220X2016237503216 linkcopy

Aging as a predictor of nursing workload in Intensive Care Unit: results from a Brazilian Sample

Envelhecimento como um preditor de carga de trabalho de enfermagem em Unidade de Terapia Intensiva: resultados de uma amostra brasileira

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

OBJECTIVE Verify if aging is an independent predictor of NW in ICU, according to age groups, and its predictive value as a determinant of NW in ICU.

METHODS Study was conducted from 2012 to 2016. A convenience sample composed by patients (age ≥ 18) admitted to nine ICU belonging to a Brazilian hospital, was analyzed. Age was assumed as an independent variable and NW (measured by the Nursing Activities Score - NAS) as dependent. Linear regression model and ROC curve were used for the analysis.

RESULTS 890 participants (361 older people), mostly males (58.1%). The mean NAS score was higher among older participants in comparison to adults (p=0.004) but not within categories of aging (p=0.697). Age was responsible for 0.6% of NAS score. Each year of age increases NAS score in 0.081 points (p=0.015). However, age was not a good predictor of NAS score (AUC = 0.394; p=0.320).

CONCLUSION The care of older people in ICU is associated with an increase in NW, compared to adults. Aging can be considered an associated factor but not a good predictor of NW in ICU.

Descriptors Aging; Aged; Nursing; Workload; Intensive Care Units

	<60	60+	70+	80+	p-value
Sex (n;%)
Men	320; 36.0	114; 12.8	61; 6.9	22; 2.5	0.001^* * Fischer exact test
Women	209; 23.5	68; 7.6	60; 6.7	36; 4.0	0.001^* * Fischer exact test
Age (mean±SD)	42.6±11.8	64.5±2.6	74.1±2.9	84.9±4.1	<0.001^# # Anova
Charlson (mean±SD)	1.8±1.9	1.8±2.0	1.9±2.0	1.8±1.6	0.774^# # Anova
SAPS2 - 1^st day (mean±SD)	32.3±13.6	31.8±13.6	33.0±16.6	32.0±14.4	0.902^#
LODS - 1^st day (mean±SD)	5.2±3.7	5.1±4.0	5.3±4.3	4.7±3.7	0.722^# # Anova
NAS (mean±SD)	69.9±13.9	73.2±18.2	71.9±13.1	73.8±7.7	0.027^# # Anova
LOS-ICU (mean±SD)	7.0±10.9	6.3±8.9	7.2±7.7	7.3±8.3	0.808^# # Anova
Type of ICU (n;%)
Clinical	171; 19.2	65; 7.3	55; 6.2	20; 2.2	0.799^* * Fischer exact test
Surgical	221; 24.8	64; 7.2	41; 4.6	27; 3.0
Specialized	137; 15.4	53; 6.0	25; 2.8	11; 1.2
Type of admission (n;%)
Clinical	326; 36.6	114; 12.8	89; 10.0	38; 4.3	0.078^* * Fischer exact test
Surgical (elective)	95; 10.7	38; 4.3	18; 2.0	7; 0.8
Surgical (emergency)	108; 12.1	30; 3.4	14; 1.6	13; 1.5
Outcome in ICU
Discharged	441; 49.6	132; 14.8	84; 9.4	41; 4.6	<0.001^* * Fischer exact test
Death	88; 9.9	50; 5.6	37; 4.2	17; 1.9	<0.001^* * Fischer exact test

Model		Adjusted R Square	Durbin-Watson	Unstandardized Coefficients		Standardized Coefficients	t	Sig.	95.0% CI for B
Model		Adjusted R Square	Durbin-Watson	B	Std. Error	Beta
1	(Constant)			67.476	1.587		42.517	0.000	64.361 - 70.591
1	Age	0.006	1.678	0.068	0.028	0.081	2.435	0.015	0.013 - 0.123

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Universidade de São Paulo, Escola de Enfermagem Av. Dr. Enéas de Carvalho Aguiar, 419 , 05403-000 São Paulo - SP/ Brasil, Tel./Fax: (55 11) 3061-7553, - São Paulo - SP - Brazil
E-mail: reeusp@usp.br

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[TFN1] ^#
Anova

[TFN2] ^*
Fischer exact test