Original articleA prospective study of the reliability and convergent validity of three physical activity measures in a field research trial
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2010, Applied ErgonomicsCitation Excerpt :It is important therefore to establish cause and magnitude of data loss, along with the effectiveness of any strategies employed to minimise such loss, as these insights are important for developing study designs for specific occupational environments and populations, and for interpreting results (Conn et al., 2000). Data loss due to technical failure (including battery faults) and participant non-adherence is periodically reported in free living PA observational studies (Williams et al., 1989; Sirard et al., 2000; Steele et al., 2000, 2003b; Verbunt et al., 2005). Estill et al. (2000) reported data quality and data loss issues during several specific ergonomic tasks but concluded that the activity monitor being investigated was user friendly and able to distinguish activity load between different groups.
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