Measuring reliability and validity of a newly developed stress instrument

Newly diagnosed breast cancer stress scale

Tso Ying Lee, Hsing Hsia Chen, Mei Ling Yeh, Hui Ling Li, Kuei Ru Chou

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Aims and objectives: To assess the reliability and validity of a developed instrument entitled Newly Diagnosed Breast Cancer Stress Scale. Background: Distress, clinical anxiety and depression are evident in patients with cancer, leading to poor psychosocial and quality-of-life outcomes. Design: Instrument development study with norm-referenced measurements. Methods: Content validity was determined by expert review. Cronbach's α was used to assess internal consistency reliability and product-moment correlations were conducted. Exploratory factor analysis measured validity of items using varimax rotation method. Criterion-related validity testing used the Perceived Stress Scale and the convergent validity test of construct validity used the Hospital Anxiety and Depression Scale. A total of 125 women pathologically diagnosed with breast cancer were interviewed on the day prior to initial breast surgery. Results: After testing, the Newly Diagnosed Breast Cancer Stress Scale consisted of four main factors with 17 items with acceptable reliability and good validity, and its length and time to complete the questionnaire were appropriate. Internal consistency reliability of the scale was shown by Cronbach's α = 0·84, the criterion validity of Perceived Stress Scale-10 was r = 0·46 (p <0·001), the convergent validity of Hospital Anxiety and Depression Scale-14 was r = 0·57 (p <0·001) for anxiety and r = 0·35 (p <0·001) for depression. Conclusions: The Newly Diagnosed Breast Cancer Stress Scale has acceptable reliability and good validity to measure stress in newly diagnosed patients with breast cancer. Relevance to clinical practice: The Newly Diagnosed Breast Cancer Stress Scale can provide healthcare workers with an instrument to better identify stress levels in newly diagnosed breast cancer patients and provide valuable information when defining psychosocial care interventions.

Original languageEnglish
Pages (from-to)2417-2425
Number of pages9
JournalJournal of Clinical Nursing
Volume22
Issue number17-18
DOIs
Publication statusPublished - Sep 2013

Fingerprint

Reproducibility of Results
Breast Neoplasms
Anxiety
Depression
Statistical Factor Analysis
Breast
Quality of Life
Delivery of Health Care
Neoplasms

Keywords

  • Breast cancer
  • Newly diagnosed patients
  • Questionnaire
  • Reliability
  • Stress scale
  • Validity

ASJC Scopus subject areas

  • Nursing(all)

Cite this

Measuring reliability and validity of a newly developed stress instrument : Newly diagnosed breast cancer stress scale. / Lee, Tso Ying; Chen, Hsing Hsia; Yeh, Mei Ling; Li, Hui Ling; Chou, Kuei Ru.

In: Journal of Clinical Nursing, Vol. 22, No. 17-18, 09.2013, p. 2417-2425.

Research output: Contribution to journalArticle

Lee, Tso Ying ; Chen, Hsing Hsia ; Yeh, Mei Ling ; Li, Hui Ling ; Chou, Kuei Ru. / Measuring reliability and validity of a newly developed stress instrument : Newly diagnosed breast cancer stress scale. In: Journal of Clinical Nursing. 2013 ; Vol. 22, No. 17-18. pp. 2417-2425.
@article{b3b075efc6f347ea996ac2da4d0873c0,
title = "Measuring reliability and validity of a newly developed stress instrument: Newly diagnosed breast cancer stress scale",
abstract = "Aims and objectives: To assess the reliability and validity of a developed instrument entitled Newly Diagnosed Breast Cancer Stress Scale. Background: Distress, clinical anxiety and depression are evident in patients with cancer, leading to poor psychosocial and quality-of-life outcomes. Design: Instrument development study with norm-referenced measurements. Methods: Content validity was determined by expert review. Cronbach's α was used to assess internal consistency reliability and product-moment correlations were conducted. Exploratory factor analysis measured validity of items using varimax rotation method. Criterion-related validity testing used the Perceived Stress Scale and the convergent validity test of construct validity used the Hospital Anxiety and Depression Scale. A total of 125 women pathologically diagnosed with breast cancer were interviewed on the day prior to initial breast surgery. Results: After testing, the Newly Diagnosed Breast Cancer Stress Scale consisted of four main factors with 17 items with acceptable reliability and good validity, and its length and time to complete the questionnaire were appropriate. Internal consistency reliability of the scale was shown by Cronbach's α = 0·84, the criterion validity of Perceived Stress Scale-10 was r = 0·46 (p <0·001), the convergent validity of Hospital Anxiety and Depression Scale-14 was r = 0·57 (p <0·001) for anxiety and r = 0·35 (p <0·001) for depression. Conclusions: The Newly Diagnosed Breast Cancer Stress Scale has acceptable reliability and good validity to measure stress in newly diagnosed patients with breast cancer. Relevance to clinical practice: The Newly Diagnosed Breast Cancer Stress Scale can provide healthcare workers with an instrument to better identify stress levels in newly diagnosed breast cancer patients and provide valuable information when defining psychosocial care interventions.",
keywords = "Breast cancer, Newly diagnosed patients, Questionnaire, Reliability, Stress scale, Validity",
author = "Lee, {Tso Ying} and Chen, {Hsing Hsia} and Yeh, {Mei Ling} and Li, {Hui Ling} and Chou, {Kuei Ru}",
year = "2013",
month = "9",
doi = "10.1111/jocn.12107",
language = "English",
volume = "22",
pages = "2417--2425",
journal = "Journal of Clinical Nursing",
issn = "0962-1067",
publisher = "Wiley-Blackwell",
number = "17-18",

}

TY - JOUR

T1 - Measuring reliability and validity of a newly developed stress instrument

T2 - Newly diagnosed breast cancer stress scale

AU - Lee, Tso Ying

AU - Chen, Hsing Hsia

AU - Yeh, Mei Ling

AU - Li, Hui Ling

AU - Chou, Kuei Ru

PY - 2013/9

Y1 - 2013/9

N2 - Aims and objectives: To assess the reliability and validity of a developed instrument entitled Newly Diagnosed Breast Cancer Stress Scale. Background: Distress, clinical anxiety and depression are evident in patients with cancer, leading to poor psychosocial and quality-of-life outcomes. Design: Instrument development study with norm-referenced measurements. Methods: Content validity was determined by expert review. Cronbach's α was used to assess internal consistency reliability and product-moment correlations were conducted. Exploratory factor analysis measured validity of items using varimax rotation method. Criterion-related validity testing used the Perceived Stress Scale and the convergent validity test of construct validity used the Hospital Anxiety and Depression Scale. A total of 125 women pathologically diagnosed with breast cancer were interviewed on the day prior to initial breast surgery. Results: After testing, the Newly Diagnosed Breast Cancer Stress Scale consisted of four main factors with 17 items with acceptable reliability and good validity, and its length and time to complete the questionnaire were appropriate. Internal consistency reliability of the scale was shown by Cronbach's α = 0·84, the criterion validity of Perceived Stress Scale-10 was r = 0·46 (p <0·001), the convergent validity of Hospital Anxiety and Depression Scale-14 was r = 0·57 (p <0·001) for anxiety and r = 0·35 (p <0·001) for depression. Conclusions: The Newly Diagnosed Breast Cancer Stress Scale has acceptable reliability and good validity to measure stress in newly diagnosed patients with breast cancer. Relevance to clinical practice: The Newly Diagnosed Breast Cancer Stress Scale can provide healthcare workers with an instrument to better identify stress levels in newly diagnosed breast cancer patients and provide valuable information when defining psychosocial care interventions.

AB - Aims and objectives: To assess the reliability and validity of a developed instrument entitled Newly Diagnosed Breast Cancer Stress Scale. Background: Distress, clinical anxiety and depression are evident in patients with cancer, leading to poor psychosocial and quality-of-life outcomes. Design: Instrument development study with norm-referenced measurements. Methods: Content validity was determined by expert review. Cronbach's α was used to assess internal consistency reliability and product-moment correlations were conducted. Exploratory factor analysis measured validity of items using varimax rotation method. Criterion-related validity testing used the Perceived Stress Scale and the convergent validity test of construct validity used the Hospital Anxiety and Depression Scale. A total of 125 women pathologically diagnosed with breast cancer were interviewed on the day prior to initial breast surgery. Results: After testing, the Newly Diagnosed Breast Cancer Stress Scale consisted of four main factors with 17 items with acceptable reliability and good validity, and its length and time to complete the questionnaire were appropriate. Internal consistency reliability of the scale was shown by Cronbach's α = 0·84, the criterion validity of Perceived Stress Scale-10 was r = 0·46 (p <0·001), the convergent validity of Hospital Anxiety and Depression Scale-14 was r = 0·57 (p <0·001) for anxiety and r = 0·35 (p <0·001) for depression. Conclusions: The Newly Diagnosed Breast Cancer Stress Scale has acceptable reliability and good validity to measure stress in newly diagnosed patients with breast cancer. Relevance to clinical practice: The Newly Diagnosed Breast Cancer Stress Scale can provide healthcare workers with an instrument to better identify stress levels in newly diagnosed breast cancer patients and provide valuable information when defining psychosocial care interventions.

KW - Breast cancer

KW - Newly diagnosed patients

KW - Questionnaire

KW - Reliability

KW - Stress scale

KW - Validity

UR - http://www.scopus.com/inward/record.url?scp=84880513063&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880513063&partnerID=8YFLogxK

U2 - 10.1111/jocn.12107

DO - 10.1111/jocn.12107

M3 - Article

VL - 22

SP - 2417

EP - 2425

JO - Journal of Clinical Nursing

JF - Journal of Clinical Nursing

SN - 0962-1067

IS - 17-18

ER -