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TABLE 2

Descriptive Overview of the Analytic Sample by Survey Year

200220092016P
Female sex, % 54.3 56.0 66.1 <.001a 
Age, y, mean (SD) 44.1 (9.6) 47.1 (10.1) 49.0 (10.9) 2002 vs 2016: <.001b; 2002 vs 2009: <.001b 
Hours worked per week, mean (SD) 43.9 (13.4) 42.9 (13.4) 41.9 (12.6) 2002 vs 2016: .01b; 2002 vs 2009: .22b 
Practice area, %    .36a 
 Suburban 43.5 43.6 49.3  
 Rural 14.0 15.1 13.9  
 Urban, inner city 16.7 18.1 13.9  
 Urban, not inner city 25.8 23.2 23.0  
Practice setting, %    .006a 
 Solo or 2-physician practice 18.2 20.0 12.4  
 Group practice or HMO 57.9 56.5 66.2  
 Medical school, hospital, clinic, or other 23.8 23.3 21.3  
Analytic sample size, n 562 532 469  
200220092016P
Female sex, % 54.3 56.0 66.1 <.001a 
Age, y, mean (SD) 44.1 (9.6) 47.1 (10.1) 49.0 (10.9) 2002 vs 2016: <.001b; 2002 vs 2009: <.001b 
Hours worked per week, mean (SD) 43.9 (13.4) 42.9 (13.4) 41.9 (12.6) 2002 vs 2016: .01b; 2002 vs 2009: .22b 
Practice area, %    .36a 
 Suburban 43.5 43.6 49.3  
 Rural 14.0 15.1 13.9  
 Urban, inner city 16.7 18.1 13.9  
 Urban, not inner city 25.8 23.2 23.0  
Practice setting, %    .006a 
 Solo or 2-physician practice 18.2 20.0 12.4  
 Group practice or HMO 57.9 56.5 66.2  
 Medical school, hospital, clinic, or other 23.8 23.3 21.3  
Analytic sample size, n 562 532 469  
a

Results from the χ2 test comparing distributions across survey years.

b

Results from the 2-tailed t test comparing means across survey years.

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