Prevalence and burden of self-reported blindness and low vision for individuals living in institutions: a nationwide survey

Table 1 Experimental design. Sampling plan. Category description

	Institution (Sampling frame)		Individuals (Sampling elements)
	Population	Sampling rate	Population	Sampling rate
Children institution	1,206	34.2%	48,398	6.8%
Adult institution	2,405	18.7%	82,852	4.3%
Psychiatric institution	394	79.2%	70,932	3.5%
Elderly care home	7,414	12.0%	490,963	1.4%

Children institution included intellectual, motor and sensorial handicap. Adult institution included individuals able to work outside, inside the institution, need for medical assistance and other type of institution. Psychiatric institution included mental disease specialized, psychiatric, and other type of hospital. Elderly institution included various types of institution, private, public, charity, short and long term, with no, mild and high medical activities.

ISSN: 1477-7525