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Table 5 Descriptive statistics, reliability and inter-correlation of the research variables

From: Improving performance in medical practices through the extended use of electronic medical record systems: a survey of Canadian family physicians

Variable (range)

mean

s.d.

α a

VIF b

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

Performance Benefits (1–5)

                     

1. Quality of Care

2.9

1.0

.91

-

-

    

2. Efficiency of physician

2.9

1.0

.91

-

.82

-

   

3. Operational Performance

3.0

0.9

.90

-

.77

.84

-

  

4. Economic Performance

2.7

1.0

.73

-

.58

.68

.74

-

 

5. Social Performance

2.5

1.0

.82

-

.71

.76

.79

.64

-

Extended EMR Use (0–1)c

                     

6. Use of Clinical functionalities

.58

.24

-

1.39

.42

.41

.40

.29

.34

-

  

7. Use of Communication funct.

.34

.26

-

1.38

.29

.30

.28

.23

.20

.51

-

 

8. Use of Administrative funct.

.81

.30

-

1.11

.19

.21

.21

.07

.08

.28

.27

-

EMR User Satisfaction (1–5)

                     

9. With Clinical functionalities

3.7

1.0

.93

-

.39

.39

.40

.25

.32

.14

.13

.12

-

  

10. With Communication funct.

3.8

1.1

.89

-

.29

.32

.33

.22

.24

.01

-.02

.13

.51

-

 

11. With Administrative funct.

4.2

0.9

.77

-

.23

.26

.27

.17

.20

.19

.16

.06

.65

.43

-

Perceived Ease of EMR Use (1–5)

                     

12. With regard to Patients

2.8

1.2

.61

-

.41

.40

.42

.34

.27

.34

.23

.13

.23

.20

.24

-

 

13. With regard to Care providers

1.9

0.9

.85

-

.40

.38

.35

.29

.33

.23

.20

.09

.19

.08

.11

.37

-

EMR Functional Coverage (0–1)d

                     

14. Availability of Clinical funct.

.67

.22

-

1.39

.36

.35

.34

.23

.30

.83

.43

.24

.11

.01

.12

.25

.23

-

  

15. Availability of Comm. funct.

.45

.25

-

1.34

.26

.25

.24

.20

.20

.43

.80

.22

.17

-.03

.14

.19

.18

.50

-

 

16. Availability of Admin. funct.

.90

.22

-

1.08

.17

.14

.19

.04

.10

.23

.15

.69

.10

.08

.08

.13

.13

.27

.18

-

Control variables

                     

17. Physician’s EMR experience (y.)

4.1

3.7

1.0

-

.26

.27

.25

.23

.14

.03

.09

.13

.21

.18

.17

.15

.18

-.02

.02

.04

-

18. Practice’s EMR experience (y.)

15.2

4.1

1.0

-

-.27

-.27

-.25

-.23

-.18

-.10

-.17

-.16

-.22

-.10

-.21

-.13

-.16

-.04

-.09

-.09

-.83

  1. aCronbach’s reliability coefficient [inappropriate for index variables].
  2. bVariance inflation factor [formative indicators only].
  3. cNo. of functionalities used/total no. of functionalities.
  4. dNo. of functionalities available/total no. of functionalities.
  5. Nota. Correlations greater than 0.11 are significant (two-tailed, p < 0.05).