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. 2021 May 12;13(5):1622. doi: 10.3390/nu13051622

Table 1.

Social-demographic distribution of participants aged 80 and above in CACDNS 2015.

Total Urban Rural
N % N % N %
Total 1929 100.0 884 45.8 1045 54.2
Age Group, year
80–84 1400 72.6 631 71.4 769 73.6
≥85 529 27.4 253 28.6 276 26.4
Gender
Male 1017 52.7 456 51.6 561 53.7
Female 912 47.3 428 48.4 484 46.3
Education Level *
Ungraduated from primary school 1221 63.3 402 45.5 819 78.4
Primary school or middle school 508 26.3 293 33.1 215 20.6
High school and above 200 10.4 189 21.4 11 1.1
Marital Status **
Without spouse 654 33.9 292 33.0 362 34.6
With spouse 1275 66.1 592 67.0 683 65.4
Household Income Level ***
Low 525 27.2 100 11.3 425 40.7
Middle 514 26.7 253 28.6 261 25.0
High 526 27.3 416 47.1 110 10.5
Unclear 364 18.9 115 13.0 249 23.8

* Education Level: Ungraduated from primary school: ungraduated from primary school and illiteracy; High school and above: high school/technical secondary school/technical school, junior college, regular college course, graduate student and above. ** Marital Status: Without spouse: spinsterhood, widowed, divorce; With spouse: married, cohabitation, separation. *** Household Income Level: Low (<20,000 RMB), Middle (20,000–50,000 RMB), High (≥50,000 RMB) and Unclear (unknow or refuse to answer).