Table 3

Different age groupings (1, 2 and 3) used in the sample of institutionalised persons, and the grouping used in this study to merge the information on age

Grouping 1

Age years

n

Grouping 2

Age years

n

Grouping 3

Age years

n

Grouping used

Age years

n

6-64

20879

6-79

13084

6-64

23446

6-64

44325

65-79

48007

> 65

9165

≥65

227599

≥80

144805

≥80

25622

NS

76815

NS

251800

NS

257895

NS

18582

NS = Not Specified

The groups differ by Autonomous Region and type of centre (type 1: home or residential centres, type 2 psychiatric or geriatric hospitals or centres for disabled persons), encompassing:

Grouping 1: type-1 centres and Autonomous Regions 1, 2, 7, 8, 9, 10, 11, 13, 16 or type-2 centres and Autonomous Regions 1, 5, 9.

Grouping 2: Type-1 centres and Autonomous Regions 4, 5, 6, 7, 12, 14, 15, 17.

Grouping 3: Type-2 centres and Autonomous Regions 2, 3, 6, 7, 8, 11, 12, 13, 14, 15, 16, 17.

Column "n" shows the number of persons in each age-group after the cases had been weighted. The age groups used were 6-64 and over-64 years (Grouping 3). Consequently, the 6-79 age group in grouping 2 and all cases with no information whatsoever on age are set to "missing".

Maierhofer et al. BMC Public Health 2011 11:897   doi:10.1186/1471-2458-11-897