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Validation Studies of the Single Question physical activity questionnaire

Rose et al. 2008

See reference #101

Methods
Single-item screening question to identify physically inactive adults compared to validated NZPAQ. (Sensitivity, specificity, likelihood ratios, positive predictive value, and Kappa statistics calculated)
Sample
1171 women aged 51-74 years
Summary Results
Did less than 150 minutes in the last 7 days
  722 (61.7%)
True positive responses
(inactive)
554 (47.3%)
True negative responses
(active)
364 (31.1%)
% Sensitivity
(95%CI)
76.7 (73.5–79.7)
% Specificity (95%CI) 81.1 (77.2–84.4)
Positive likelihood ratio
(95%CI)
4.05 (3.33–4.93)
Negative likelihood ratio
(95%CI)
0.29 (0.25–0.33)
Positive predictive value
(95%CI)
86.7 (83.8–89.1)
Kappa statistic *0.56, p < 0.001

Last Modified: 11 Apr 2014