Table 2

Descriptive Statistics on Control Variables, Income through Controllable Lifestyle

Variable/Description

Frequency

Percent

Mean satisfaction score

p-values for uni-variable regression model F-test


<$50k income

481

7.3

0.23

0.2397 for 7 income categories

$50-$99 k income

801

12.2

0.27

$100-$149 k income

1656

25.1

0.24

$150-$199 k income

1387

21.0

0.28

$200-$249 k income

888

13.5

0.32

$250-$299 k income

523

7.9

0.28

>$300 k income

854

13.0

0.34

work hours ≤40

1763

26.8

0.36

<0.0001 for 4 hours categories

41 ≤work hours ≤50

1850

28.1

0.37

51 ≤work hours ≤60

1692

25.7

0.24

work hours ≥61

1285

19.5

0.14

full owner (sole proprietor)

1966

29.8

0.21

0.0052 for 3 owner categories

part owner (partner)

1442

21.9

0.34

Not an owner

3182

48.3

0.30

Currently employed by medical school

628

9.5

0.36

0.0720

Percent revenue managed care 0-20%

1917

29.1

0.30

0.2549 for 4 managed care categories

Percent revenue managed care 21-40%

1669

25.3

0.30

Percent revenue managed care 41-60%

1281

19.4

0.30

Percent revenue managed care >60%

1723

26.1

0.23

Controllable lifestyle

Controllable

1231

18.7

0.33

0.0065

Uncontrollable

4084

62.0

0.24

Neither controllable nor uncontrollable

1275

19.3

0.33


Leigh et al. BMC Health Services Research 2009 9:166   doi:10.1186/1472-6963-9-166

Open Data