TY - JOUR
T1 - Test-retest reliability of single-item assessments of immune fitness, mood, and quality of life
AU - Verster, Joris C.
AU - Mulder, Kiki EW
AU - Verheul, Marjolijn CE
AU - van Oostrom, Evi C.
AU - Hendriksen, Pauline A.
AU - Scholey, Andrew
AU - Garssen, Johan
N1 - Publisher Copyright:
© 2023 The Authors
PY - 2023/4
Y1 - 2023/4
N2 - The use of single-item assessments is increasingly important and popular, as these enable quick real-time assessments in clinical practice or research. In this study we investigated the test-retest reliability of single-item assessments of mood (“stress”, “anxiety”, “depression”, “fatigue”, “loneliness”, “being active”, “optimism”, and “happiness”), quality of life, and immune fitness in N = 108 participants. The analysis revealed high test-retest correlations between the single-item assessments (r = 0.67 to 0.90), moderate to excellent intraclass correlations (r = 0.672 to 0.889), and the Bland-Altman analysis revealed agreement between all test-retest assessments, except for depression. Taken together, it can be concluded that the single-item assessments of mood, quality and immune fitness have a good test-retest reliability. This strengthens the rationale for using these single item assessments.
AB - The use of single-item assessments is increasingly important and popular, as these enable quick real-time assessments in clinical practice or research. In this study we investigated the test-retest reliability of single-item assessments of mood (“stress”, “anxiety”, “depression”, “fatigue”, “loneliness”, “being active”, “optimism”, and “happiness”), quality of life, and immune fitness in N = 108 participants. The analysis revealed high test-retest correlations between the single-item assessments (r = 0.67 to 0.90), moderate to excellent intraclass correlations (r = 0.672 to 0.889), and the Bland-Altman analysis revealed agreement between all test-retest assessments, except for depression. Taken together, it can be concluded that the single-item assessments of mood, quality and immune fitness have a good test-retest reliability. This strengthens the rationale for using these single item assessments.
KW - Bland-altman
KW - Immune fitness
KW - Intraclass correlation
KW - Mood
KW - Quality of life
KW - Single-item assessments
KW - Test-retest reliability
UR - http://www.scopus.com/inward/record.url?scp=85151545619&partnerID=8YFLogxK
U2 - 10.1016/j.heliyon.2023.e15280
DO - 10.1016/j.heliyon.2023.e15280
M3 - Article
AN - SCOPUS:85151545619
SN - 2405-8440
VL - 9
JO - Heliyon
JF - Heliyon
IS - 4
M1 - e15280
ER -