Validation of a historical physical activity questionnaire in middle-aged women.
ABSTRACT Historical physical activity (PA) questionnaires assess relationships between past PA and chronic diseases. The 4-Corner's Historical Physical Activity Questionnaire (HPAQ) was validated in 78 middle-age women.
In 1996 and 1998, women kept PA records (PAR) for four consecutive days while wearing Caltrac accelerometers. In 2001, the same women recalled their past PA levels using the HPAQ. PA levels from the HPAQ were compared to PARs and the Caltrac. Race-adjusted Spearman correlations determined validity.
Low to modest correlations existed between PA (min/wk and MET-min/wk) from the HPAQ and PARs for moderate (r = 0.16 and 0.14, respectively), vigorous PA (r = 0.26 and 0.27, respectively; P < 0.05) and moderate-vigorous PA (r = 0.20 and 0.17, respectively). Moderate and moderate-vigorous, but not vigorous PA was positively related to energy expenditure expressed as kilocalories (r = 0.23, P < 0.05 and 0.22, -0.03, respectively) or PA volume (MET-min/wk) (r = 0.29, 0.29, P < 0.05 and 0.10, respectively).
The HPAQ can produce valid estimates of women's past moderate and vigorous PA levels.
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- "Our results support that reliability coefficients were generally higher than validity coefficients , since diaries are not the perfect 'gold standard' for the measurement of PA (Vanhees et al. 2005). Despite this, other studies have used other PA subjective instruments as a reference for validation of questionnaires (Arroll et al. 1991; Suleiman and Nelson 1997; Friedenreich et al. 2006; DuBose et al. 2007; Orsini et al. 2008). The fact that both methods have independent errors minimize the possibility of seriously high estimates of validity (Gibson 2005, pp. "
ABSTRACT: No self-report method to measure different types and intensities of physical activity (PA) in adults has been tested in the Portuguese population. We assessed the validity, reproducibility and seasonal bias on past-year PA reporting. A sample of 953 Portuguese adults was evaluated between 2001 and 2003. A 4 x 7-day PA diary was used as a reference method to evaluate the validity of the EPIC questionnaire adapted for the Portuguese population (n = 114). Spearman's correlation coefficients were calculated and agreement was tested using Bland-Altman plots. Trigonometric linear models were used to assess the seasonal variation. Correlations between the questionnaire and the diaries were 0.56, 0.50, 0.88 and 0.78 for total, rest, occupational and leisure-time PA, respectively. The coefficients for reproducibility (2-3 months interval) ranged between 0.80 for leisure and 0.91 for occupational. Visualizing Bland-Altman plots, only rest PA revealed a tendency towards an increase in differences with increasing rest reported. Males interviewed in April and August reported the highest and lowest mean of leisure-time PA, respectively. For professional activities, the probability of amplitude being over one-half standard deviation was 33%. The questionnaire is a valid and reproducible instrument for the brief assessment of usual energy expenditure in adults, detailing different types of PA. In males, seasonal bias on reporting leisure-time and professional PA was found.Annals of Human Biology 12/2009; 37(2):185-97. DOI:10.3109/03014460903341836 · 1.15 Impact Factor
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ABSTRACT: This study explores whether certain population characteristics are associated with adherence to mammography screening guidelines among Hispanic and non-Hispanic white (NHW) women living in the southwestern United States. Participants in a population-based study (4-Corners' Breast Cancer Study) included in this analysis were 790 Hispanic women and 1,441 NHW women. Multivariate logistic regression was used to compute the ethnic-specific adjusted odds ratios (OR) and 95% confidence intervals (CI) for the association of the outcome variable (adherent vs. nonadherent) and its correlates. Women were adherent if they had obtained their first mammogram between 41 and 50 years of age and had received at least one mammogram per 2 years or less. Ethnic-specific associations were observed with certain population characteristics and mammography adherence. Specifically, characteristics that were significantly associated with adherence among Hispanic women were younger age (50-59 years), having a family history of breast cancer, nulliparity, hormone replacement therapy (HRT) use, nonsteroidal anti-inflammatory drug (NSAID) use, and performing regular breast self-examinations (BSE). Among NHW women, younger age (50-59 years), family history of breast cancer, obesity, consuming moderate amounts of alcohol, and taking HRT were associated with mammography adherence. When adjusting for the evaluated population characteristics, the relationship between ethnicity and mammography adherence was no longer apparent. Ethnic-specific characteristics appear to explain differences in mammography adherence among Hispanic and NHW women. Disparities in screening rates, late-stage disease and breast cancer mortality that impact Hispanic women could potentially be addressed more effectively by interventions that specifically target the unique characteristics of the Hispanic population.Journal of Women's Health 09/2009; 18(10):1585-894. DOI:10.1089/jwh.2008.1009 · 1.90 Impact Factor