Dataset Information

Percentage-Method Improves Properties of Workers' Sitting- and Walking-Time Questionnaire.

ABSTRACT:

Background

Does asking for the percentage of time spent sitting during work (P-method) instead of asking for the absolute length of time spent sitting (T-method) improve properties of the workers' sitting- and walking-time questionnaire (WSWQ)? The purpose of this study was to investigate whether questioning technique influences test-retest reliability and criterion validity of the WSWQ.

Methods

Sixty-five Japanese workers completed each version of the WSWQ in random order. Both questionnaires assessed quantities of time spent sitting or walking (including standing) during work time, non-working time on a workday, and anytime on a non-workday. Participants wore the thigh-worn inclinometer (activPAL) as criterion measure. Intraclass correlation coefficients (ICC) and Spearman's ρ were used for the analyses.

Results

For all three domains, values of reliability and validity with the P-method tended to be higher than with the T-method: ICC values ranged from 0.48-0.85 for the T-method and from 0.71-0.85 for the P-method; Spearman's ρ values ranged from 0.25-0.58 for the T-method and from 0.42-0.65 for the P-method. The validities with both methods on a workday (0.51-0.58 for the T-method and 0.56-0.65 for the P-method) were higher than validities on a non-workday (0.25-0.45 for the T-method and 0.42-0.60 for the P-method). In post-survey interviews, 48 participants (77%) chose the P-method as their preferred questioning style.

Conclusions

The study revealed that the P-method WSWQ had better reliability, validity, and ease of answering than the T-method, suggesting that the P-method can improve properties of the WSWQ and consequently advance the quality of epidemiological surveys in this field.

SUBMITTER: Matsuo T

PROVIDER: S-EPMC4967661 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Publications

Percentage-Method Improves Properties of Workers' Sitting- and Walking-Time Questionnaire.

Matsuo Tomoaki T Sasai Hiroyuki H So Rina R Ohkawara Kazunori K

Journal of epidemiology 20160206 8

<h4>Background</h4>Does asking for the percentage of time spent sitting during work (P-method) instead of asking for the absolute length of time spent sitting (T-method) improve properties of the workers' sitting- and walking-time questionnaire (WSWQ)? The purpose of this study was to investigate whether questioning technique influences test-retest reliability and criterion validity of the WSWQ.<h4>Methods</h4>Sixty-five Japanese workers completed each version of the WSWQ in random order. Both q ...[more]

PMID: 26853102

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Dataset Information

Percentage-Method Improves Properties of Workers' Sitting- and Walking-Time Questionnaire.

Background

Methods

Results

Conclusions

Publications

Percentage-Method Improves Properties of Workers' Sitting- and Walking-Time Questionnaire.

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