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Table 1 Socio-demographic and behavioural characteristics of participants determined to be eligible with and without being required to obtain medical exercise clearance

From: What is the impact of obtaining medical clearance to participate in a randomised controlled trial examining a physical activity intervention on the socio-demographic and risk factor profiles of included participants?

  Overall sample Initially eligible Medical exercise clearance screened and eligible  
  Number of subjects Mean (SD) or % Number of subjects Mean (SD) or % Number of subjects Mean (SD) or % p Value
Sex
 Male 176 34.9% 129 32.3% 47 44.8%  
 Female 328 65.1% 270 67.7% 58 55.2% 0.017
Age 504 50.8 (13.1) 399 48.5 (12.8) 105 59.7 (10.1) 0.001
Highest education level
 Higher educationa 171 33.9% 140 35.1% 31 29.5%  
 Trade/diploma 193 38.3% 158 39.6% 35 18.1%  
 School education 140 27.8% 101 25.3% 39 37.1% 0.055
Employment status
 Full-time 234 46.4% 191 47.9% 43 41.0%  
 Part-time/casual 111 22.0% 99 24.8% 12 11.4%  
Otherb 159 31.5% 109 27.3% 50 47.6% 0.001
Occupational categoryc
 Professional 159 31.5% 134 33.6% 25 23.8%  
 White collar 102 20.2% 85 21.3% 17 16.2%  
 Blue collar 31 6.2% 27 6.8% 4 3.8%  
 Other 53 10.5% 44 11.0% 9 8.6%  
 No response 159 31.5 109 27.3% 50 47.6% 0.003
Weekly household income/week
 <$1000 140 27.8% 99 24.8% 41 39.0%  
 $1000–$1999 146 29.0% 122 30.6% 24 22.9%  
 $2000–$5000+ 150 29.8% 126 31.6% 24 22.9%  
 No response 68 13.5% 52 13.0% 16 15.2% 0.017
Weight, kg 504 81.9 (18.9) 399 81.1 (19.4) 105 84.9 (16.9) 0.063
BMI, kg/m2 504 29.3 (5.9) 399 29.0 (5.9) 105 30.6 (5.7) 0.010
BMI category
 Underweight/normal weight 122 24.2% 108 27.1% 14 13.3%  
 Overweight 179 35.5% 140 35.1% 39 37.1%  
 Obese 203 40.3% 151 37.8% 52 49.5% 0.009
Waist circumference, cmd 469 99.9 (14.3) 372 98.8 (14.5) 97 103.9 (13.0) 0.002
Waist circumference categoryd
 Healthy 67 14.3% 56 15.1% 11 11.3%  
 Risky 101 21.5% 88 23.7% 13 13.4%  
 High risk 301 64.2% 228 61.3% 73 75.3% 0.033
Self-reported physical activity
 No reported activity 32 6.3% 26 6.5% 6 5.7%  
 Insufficient activity 256 50.8% 207 51.9% 49 46.7%  
 Sufficient activity 216 42.9% 166 41.6% 50 47.6% 0.540
Objective physical activity
 Minutes of sedentary behaviour 465 535.2 (83.8) 367 530.9 (83.1) 98 551.4 (84.9) 0.031
 Average daily number of steps 465 7247.6 (2424.3) 367 7350.3 (2416.9) 98 6863.0 (2425.6) 0.077
 Minutes of moderate to vigorous physical activity 465 24.0 (18.2) 367 24.5 (18.5) 98 22.0 (17.2) 0.218
  1. BMI Body mass index
  2. aHighest education includes higher education (bachelor’s degree), graduate diploma/certificate, postgraduate; trade/diploma (certificate, diploma, advanced diploma); school education (high school)
  3. bOther employment includes unemployed, retired, student, home duties, pensioner
  4. cOccupation: professional includes professional, manager; white collar includes community and personal service workers, clerical and administrative, sales; blue collar includes technical and trade worker, operator, driver, manual labourer; other includes taxi driver, telephone interviewer, cashier, grazier, multiple jobs
  5. dThe number of participants for waist circumference does not total 504, owing to missing data for this variable