Table 1.

Sample characteristics

Variable	2004	2009	2014
Households	11,993	11,971	12,090
Response rates (%)	99.89	99.76	99.95
Individuals	59,852	57,105	53,968
0–59 years (%)	94.7	93.1	92.9
≥ 60 years (%)	5.3	6.9	7.1
Gender people aged ≥ 60 years
Men	41.5	42.7	40.7
Women	58.5	57.3	59.3
Mean age in years [SD]
0–59 years	21.4 [15.1]	23.3 [15.6]	24.8 [16.1]
≥ 60 years	68.8 [6.9]	68.9 [7.4]	68.8 [7.3]
Households with older people (in %)
One or more older people	24.2	25.7	28.8
1 older person	18	17.6	18.8
2 older persons	6.2	5.9	7.4
Older people living alone (%)	2.7	3.3	3.8
Having a disability only (%)
0–59 years	2.2	1.9	1.2
≥ 60 years	18.1	12.1	8.3
Having NCD only (%)
0–59 years	NA	1.7	1.6
≥ 60 years	NA	8.4	9.7
NCD and disability (%)
0–59 years	NA	0.4	0.3
≥ 60 years	NA	5.6	3.7
Access to drinking water (%)
0–59 years	54.2	44.5	51.7
≥ 60 years	54.7	45.6	52.0
Have toilet (%)
0–59 years	25.1	37.1	58.6
≥ 60 years	26.2	42.6	64.1

NA not assessed