Table 4

Results of multilevel analyses: estimated mean and standard error per quality aspect and chi-squares indicating the change over years for all health plans

Quality aspect

M

SE

Time effects


Linear

Quadratic


General rating of health plan

10.68**

33.67***

2005

7.53

0.06

2006

7.66

0.05

2007

7.75

0.05

2008

7.66

0.05

Conduct of employees

19.62***

0.19

2005

3.50

0.02

2006

3.52

0.02

2007

3.57

0.02

2008

3.58

0.02

Health plan information

15.56***

12.37***

2005

2.63

0.02

2006

2.70

0.01

2007

2.72

0.02

2008

2.71

0.02

Access to call centre

10.59**

20.81***

2005

2.56

0.04

2006

2.36

0.04

2007

2.59

0.03

2008

2.60

0.03

Getting the needed help from call centre

0.98

5.04*

2005

3.40

0.03

2006

3.28

0.03

2007

3.41

0.03

2008

3.38

0.04

Reimbursement of claims

1.27

4.50*

2005

3.67

0.02

2006

3.60

0.03

2007

3.68

0.02

2008

3.67

0.02

Transparency of (co)payment requirements

7.35**

6.33*

2005

2.68

0.03

2006

2.68

0.04

2007

2.67

0.04

2008

2.79

0.04


Note. * p < .05; ** p < .01; *** p < .001.

Hendriks et al. BMC Health Services Research 2009 9:167   doi:10.1186/1472-6963-9-167

Open Data