Valid, reliable, and culturally-specific scales to measure salt reduction self-care behavior in older adults are needed. The purpose of this study was to develop the Dietary Salt Reduction Self-Care Behavior Scale (DSR-SCB) for use in hypertensive older adults with Orem’s self-care deficit theory as a base. Exploratory factor analysis, Rasch modeling, and reliability were performed on data from 242 older Thai adults. Nine items loaded on one factor (factor loadings = 0.63 to 0.79) and accounted for 52.28% of the variance (Eigenvalue = 4.71). The Kaiser-Meyer-Olkin method of sampling adequacy was 0.89, and the Bartlett’s test showed significance (χ2 (df =36) = 916.48, p < 0.0001). Infit and outfit mean squares ranged from 0.81 to 1.25, while infit and outfit standardized mean squares were located at ±2. Cronbach’s alpha was 0.88. The 9-item DSR-SCB is a short and reliable scale.
AdsheadS.A.M. (1992). Salt and civilization. London: Macmilan Academic and Professional.
2.
AppelLawrence J.BrandsMichael W.DanielsStephen R.KaranjaNjeriElmerPatricia J.SacksFrank M. (2006). Dietary approaches to prevent and treat hypertension: A scientific statement from the American Heart Association. Hypertension, 47, 296-308. doi: 10.1161/ 01.HYP.0000202568.01167.B6
3.
BondT.G.FoxC.M. (2007). Applying the Rasch Model: Fundamental measurement in the human sciences (2nd ed.). Mahwah, NJ: Lawrence Erlbaum.
4.
CallaghanD. (2006). The influence of basic conditioning factors on healthy behaviors, self-efficacy, and self-care in adults. Journal of Holistic Nursing, 24(3), 178-185. doi: 10.1177/0898010106289854
5.
Centers for Disease Control and Prevention. (2009). Application of lower sodium intake recommendations to adults — United States, 1999–2006. MMWR: Morbidity & Mortality Weekly Report, 58(11), 281-283.
6.
ChenC. C.BodeR. K.GrangerC. V.HeinemannA. W. (2005). Psychometric properties and developmental differences in children’s ADL item hierarchy: A study of the WEEFIM instrument. American Journal of Physical Medicine & Rehabilitation, 84, 671-679.
7.
CianciarusoB.BellizziV.MinutoloR.TaveraA.CapuanoA.ConteG.De NicolaL. (1998). Salt intake and renal outcome in patients with progressive renal disease. Mineral and Electrolyte Metabolism, 24, 296-301. doi: 10.1159/000057385
8.
DoddM. J.DibbleS. L. (1993). Predictors of self-care: A test of Orem’s model. Oncology Nursing Forum, 20, 895-901.
9.
EatonS. BoydEatonStanley B.IIIKonnerMelvin J.ShostakMarjorie. (1996). An evolutionary perspective enhances understanding of human nutritional requirements. Journal of Nutrition, 126, 1732-1740.
10.
ElliottP. (1989). The INTERSALT study: An addition to the evidence on salt and blood pressure, and some implications. Journal of Human Hypertension, 3, 289-298.
11.
GaryRebecca. (2006). Self-care practices in women with diastolic heart failure. Heart & Lung: The Journal of Critical Care, 35(1), 9-19. doi: http://dx.doi.org/10.1016/j.hrtlng.2005.04.005
12.
GorsuchR.L. (1983). Factor analysis (2nd ed.). Hillsdale, NJ: Lawrence Erlbaum.
13.
JaarsmaT.HalfensR.TanF.Abu-SaadH. HuijerDracupK.DiederiksJ. (2000). Self-care and quality of life in patients with advanced heart failure: The effect of a supportive educational intervention. Heart & Lung: The Journal of Acute and Critical Care, 29, 319-330. doi: http://dx.doi.org/10.1067/mhl.2000.108323
14.
KlineP. (1993). The handbook of psychological testing. London: Routledge.
15.
KlineP. (2002). An easy guide to factor analysis. London: Routledge.
16.
KrumholzHarlan M.AmatrudaJoanSmithGrace L.MatteraJennifer A.RoumanisSarah A.RadfordMartha J.. . . VaccarinoViola. (2002). Randomized trial of an education and support intervention to preventreadmission of patients with heart failure. Journal of the American College of Cardiology, 39(1), 83-89. doi: 10.1016/S0735-1097(01)01699-0
17.
KumarColeen P. (2007). Application of Orem’s Self-Care Deficit Theory and standardized nursing languages in a case study of a woman with diabetes. International Journal of Nursing Terminologies and Classifications, 18(3), 103-110. doi: 10.1111/j.1744-618X.2007.00058.x
McDonald-MiszczakLeslieWisterAndrew V.GutmanGloria M. (2001). Self-care among older adults: An analysis of the objective and subjective illness contexts. Journal of Aging and Health, 13(1), 120-145. doi: 10.1177/089826430101300106
NunnallyJ.C.BersteinI. H. (1994). Psychometric theory (3rd ed.). New York: McGraw-Hill.
22.
OhtaY.TsuchihashiT.ArakawaK.OnakaU.UenoM. (2007). Prevalence and lifestyle characteristics of hypertensive patients with metabolic syndrome followed at an outpatient clinic in Fukuoka, Japan. Hypertension Research, 30, 1077-1082. doi: 10.1291/hypres.30.1077
23.
OremD.E. (1985). Nursing: Concepts of practice (3rd ed.). New York: McGraw-Hill.
24.
OremD.E. (2001). Nursing: Concepts of practice (6th ed.). St. Louis: Mosby.
25.
PanA. W.ChungL.FifeB. L.HsiungP. C. (2007). Evaluation of the psychometrics of the Social Impact Scale: A measure of stigmatization. Int J Rehabil Res, 30(3), 235-238. doi: 10.1097/MRR.0b013e32829fb3db
26.
PetersR. M.TemplinT. N. (2008). Measuring blood pressure knowledge and self-care behaviors of African Americans. Research in Nursing & Health, 31, 543-552. doi: 10.1002/nur.20287
27.
PetersR. M.TemplinT. N. (2010). Theory of planned behavior, self-care motivation, and blood pressure self-care. Research & Theory for Nursing Practice, 24(3), 172-186. doi: 10.1891/1541-6577.24.3.172
28.
PettM.A.LackeyN.R.SullivanJ.J. (2003). Making sense of factor analysis: The use of factor analysis for instrument developement in health care research. Thousand Oaks, CA: Sage.
29.
RobertsWilliam Clifford. (2001). High salt intake, its origins, its economic impact, and its effect on blood pressure. The American Journal of Cardiology, 88, 1338-1346. doi: http://dx.doi.org/10.1016/S0002-9149(01)02105-1
30.
RujiwatthanakornD. (2004). Sodium consumption of persons with hypertension. (Master’s thesis), Mahidol University, Bangkok, Thailand.
31.
SimmonsLaurie. (2009). Dorthea Orem’s Self Care Theory as related to nursing practice in hemodialysis. Nephrology Nursing Journal, 36, 419-421.
32.
SmithEverett V.ConradKaren M.ChangKarenPiazzaJo. (2002). An Introduction to Rasch Measurement for Scale Development and Person Assessment. Journal of Nursing Measurement, 10(3), 189-206. doi: 10.1891/jnum.10.3.189.52562
33.
SongM. (2010). Diabetes mellitus and the importance of Self-care. Journal of Cardiovascular Nursing, 25(2), 93-98. doi: 10.1097/JCN.0b013e3181c5a364
34.
StevensJ. (2009). Applied multivariate statistics for the social science. New York: Routledge
35.
TabachnickB.G.FidellL.S. (2007). Using multivariate statistics (5th ed.). Needham Heights, MA: Allyn & Bacon.
36.
The Japanese Society of Hypertension. (2006). Japanese Society of Hypertension guidelines for the management of hypertension (JSH 2004). Hypertension Research, 29, S1-105.
