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. 2020 Jun 11;10(6):e034683. doi: 10.1136/bmjopen-2019-034683

Table 3.

Example of quotas within a sampled catchment area based on the composition of sex, age and educational level in the general population of the respective region (source: official statistics for 2017 generated from microdata.no)

Sex Highest attained educational level Age groups Total quota per sex and educational level
18–24 25–34 35–44 45–54 55–64 65–74 75+
Male Primary or secondary 8 9 8 9 9 7 5 56
Tertiary 1 3 3 3 3 2 1 16
Female Primary or secondary 7 6 5 7 8 8 7 47
Tertiary 1 5 5 5 3 2 1 22
Total quota per age group 17 22 22 25 22 18 14 140

Example given sampling scenario and catchment area for Hospital 1 in table 2.