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Table 3 The mean, standard deviation, interquartile range for and Spearman’s correlations between the study variables

From: Subjective and objective levels of physical activity and their association with cardiorespiratory fitness in rheumatoid arthritis patients

Variables M SD IQR (1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
(1) GT3X sedentary (minutes per day) 583 98 142 -          
(2) GT3X light PA (minutes per day) 275 79 123 -.78** -         
(3) GT3X moderate PA (minutes per day) 19 17 20 -.44** .37** -        
(4) GT3X MVPA (minutes per day) 19 17 20 -.44** .37** 1** -       
(5) Step counts 5378 2708 3716 -.64** .59** .78** .78** -      
(6) IPAQ sitting (minutes per day) 290 159 255 .32* -.37* -.15 -.15 -.33** -     
(7) IPAQ walking (minutes per day) 616 653 57 -.18 .19 .30* .29* .21 -.24* -    
(8) IPAQ moderate PA (minutes per day) 85 275 103 -.22 .25* .28* .27* .28* -.25* .42** -   
(9) IPAQ vigorous PA (minutes per day) 701 785 0 -.09 .08 .01 .01 .08 -.00 .16 .34** -  
(10) IPAQ MVPA (minutes per day) 510 731 122 -.24 .27* .28* .27* .29* -.24* .43** .98** .45** -
(11) VO2 max (ml/min/kg) 20.17 4.60 7.17 -.27* .35** .34** .33* .48** -.02 .11 .25* .19 .27**
  1. IPAQ, International Physical Activity Questionnaire; IQR, interquartile range; M, mean; MVPA, moderate to vigorous physical activity; PA, physical activity; SD, standard deviation. *P <0.05, **P <0.01.