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Table 3 Assessing the validity of GPPAQ questionnaire data using accelerometry data as the “gold standard”

From: Evaluation of reliability and validity of the General Practice Physical Activity Questionnaire (GPPAQ) in 60–74 year old primary care patients

   All N = 289 Retired/Not working N = 193 Working N = 96
Baseline accelerometry
 Those achieving DH Physical Activity guidelines of 150 min of MVPA in 10 min bouts1 69 (24 %) 50 (26 %) 19 (20 %)
Baseline GPPAQ Physical Activity Index
 Not active: GPPAQ Inactive 152 (53 %) 116 (60 %) 36 (38 %)
  GPPAQ Moderately inactive 35 (12 %) 18 (9 %) 17 (18 %)
  GPPAQ Moderately active 55 (19 %) 29 (15 %) 26 (27 %)
 Active: GPPAQ Active 47 (16 %) 30 (16 %) 17 (18 %)
Sensitivity of GPPAQ to identify “Active” individuals   19 % (13/69) 18 % (9/50) 21 % (4/19)
Specificity of GPPAQ to identify “Not active” individuals   85 % (186/220) 85 % (122/143) 83 % (64/77)
Baseline GPPAQ-Walk Physical Activity Index2
 Not active: GPPAQ Inactive 123 (43 %) 97 (50 %) 26 (27 %)
  GPPAQ Moderately inactive 30 (10 %) 15 (8 %) 15 (16 %)
  GPPAQ Moderately active 44 (15 %) 20 (11 %) 24 (25 %)
 Active: GPPAQ Active 92 (32 %) 61 (32 %) 31 (32 %)
Sensitivity of GPPAQ-walk to identify “Active” individuals 39 % (27/69) 40 % (20/50) 37 % (7/19)  
Specificity of GPPAQ-walk to identify “Not active” individuals 70 % (155/220) 71 % (102/143) 69 % (53/77)  
  1. 1. DH Guidelines recommend at least 150 min of MVPA in bouts of at least 10 mins
  2. 2. GPPAQ-Walk additionally classifies those who walk ≥3 h per week at a “brisk” or “fast” pace as active