TitleStand and Move at Work sedentary behavior questionnaire: validity and sensitivity to change.
Publication TypeJournal Article
Year of Publication2019
AuthorsToledo, MJ, Mullane, SL, Larouche, ML, Rydell, SA, Mitchell, NR, Pereira, MA, Buman, MP
JournalAnn Epidemiol
Date Published2019 03
KeywordsAccelerometry, Adult, Arizona, Exercise, Female, Humans, Male, Middle Aged, Minnesota, Reproducibility of Results, Sedentary Behavior, Self Report, Surveys and Questionnaires, Urban Population, Workplace

PURPOSE: We evaluated the validity and sensitivity to change of a workplace questionnaire to assess sedentary behavior (SB) during and outside work.

METHODS: Participants wore an activPAL and completed an SB questionnaire at two time points (baseline and 3-month follow-up). Ecological momentary assessments were used to assess workplace location (at desk vs. away from desk). Intraclass correlation coefficients, mean difference, root of mean square error, kappa agreement, and Bland-Altman plots assessed validity. Sensitivity to change after 3 months of intervention was assessed using the standardized effect size.

RESULTS: Data from 546 participants (age = 45.1 ± 16.4 years, 24.9% males, 72.7% white) were analyzed. Intraclass correlation coefficients ranged from 0.08 to 0.23. SB was overestimated d¯(95%CI)[] by 47.9 (39.2, 56.6) min during work hours but underestimated for both non-work hours and nonworkdays by -38.3 (-47.4, 29.1) and -106.7 (124.0, -89.5) min, respectively. Participants slightly underestimated SB by -3.4 (-12.6, 5.7)% when at their desk but overestimated SB by 2.8 (-2.4, 8.0)% when not at their desk. The questionnaire demonstrated similar standardized effect size (>0.6) to the activPAL for sedentary and standing time.

CONCLUSIONS: Agreement between the questionnaire and activPAL was on par with other self-report measures. The questionnaire yielded valid estimates of at/away from desk SB and was sensitive to change.

Alternate JournalAnn Epidemiol
PubMed ID30718055
PubMed Central IDPMC6420389
Grant ListR01 CA198971 / CA / NCI NIH HHS / United States