Table 6

Results of multilevel analyses: estimated mean and standard error per quality aspect in 2005 and 2008 and chi-squares indicating the time effects for health plans who scored below average, average or above average in 2005

2005

2008

Time effect

M

SE

M

SE


General rating of health plan

below average score in 2005

7.30

0.04

7.52

0.04

17.60***

average score in 2005

7.53

0.11

7.51

0.15

0.02

above average score in 2005

7.90

0.05

7.88

0.05

0.11

Conduct of employees

below average score in 2005

3.34

0.02

3.52

0.05

15.38***

average score in 2005

3.49

0.02

3.55

0.03

5.55*

above average score in 2005

3.65

0.02

3.67

0.03

0.64

Health plan information

below average score in 2005

2.54

0.02

2.71

0.04

16.96***

average score in 2005

2.61

0.01

2.72

0.02

22.61***

above average score in 2005

2.75

0.02

2.75

0.03

0.05

Access to call centre

below average score in 2005

2.26

0.04

2.40

0.04

4.26*

average score in 2005

2.53

0.03

2.58

0.04

0.70

above average score in 2005

2.75

0.03

2.72

0.03

0.29

Getting the needed help from call centre

below average score in 2005

3.13

0.04

3.23

0.08

1.43

average score in 2005

3.37

0.02

3.34

0.04

0.49

above average score in 2005

3.60

0.03

3.54

0.06

1.03

Reimbursement of claims

below average score in 2005

3.51

0.02

3.65

0.03

16.53***

average score in 2005

3.68

0.02

3.64

0.03

1.01

above average score in 2005

3.79

0.02

3.70

0.03

9.19**

Transparency of (co)payment requirements

below average score in 2005

2.49

0.04

2.65

0.07

3.89*

average score in 2005

2.63

0.03

2.75

0.04

5.80*

above average score in 2005

2.95

0.04

3.05

0.06

1.81


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