Table 2

Non-response analyses

Respondents

Non-respondents


2006 (n)

(31 hospitals)

8,311

unknown


% Male 2006

unknown

unknown


Avg. age 2006

61

unknown


2007 (n)

(78 hospitals)

22,333

14,190


% Male 2007

42%

42%


Avg. age 2007

61

63


2009 (n) (94 hospitals)

24,246

18,009


% Male 2009

43%

42%


Avg. age 2009

60*

72


*Significant at p < 0.05, **significant at p < 0.01, ***significant at p < 0.001

Ikkersheim and Koolman BMC Health Services Research 2012 12:76   doi:10.1186/1472-6963-12-76

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