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. 2020 Oct 23;17(21):7744. doi: 10.3390/ijerph17217744

Table A1.

Distribution of nodes by age group, gender, citizenship, and location. The age distribution of individuals was based on citizenship and gender but is approximated here. Similarly, the gender distribution was also based on citizenship but is approximated here.

Attribute Values Percent
Age group 0–9 15%
10–19 15%
20–29 20%
30–39 20%
40–49 15%
50–59 8%
60–69 4%
70–79 2%
80+ 1%
Gender Male 50%
Female 50%
Citizenship Saudi 62%
Non Saudi 38%
Location Riyadh 25%
Mecca 8%
Jeddah 14%
Taif 3%
Madina 7%
Qassim 4%
Eastern region 15%
Aseer 7%
Tabuk 3%
Hail 2%
Northern region 1%
Jazan 5%
Najran 2%
Albaha 2%
Aljouf 2%