Sample number

1000 SMA residents

The number of SMA residents in 2012: 22,829, 976

(Seoul City: 10,442,426; Gyeonggi Province: 12,381, 550)^*

Gender

Male (511); Female (489)

Age

10 - 19 (50); 20 - 29 (338); 30 - 39 (350); 40 - 49 (162); 50 and over (100)

Mean/Standard deviation: 34.4/0.36 (Range14 - 104)

Average age of SMA residents in 2012: 38.25

(Seoul City: 39.2; Gyeonggi Province: 37.3)^*

Educational level

High school and below (181); Undergraduate (647); Graduate (172)

Occupation

Employee (686); Homemaker (99); Student (154); Other (61)

A total of 89 respondents had jobs or were students in the field of environmental or solid waste management. (office, service or business employees and students: 73; administrative officers, engineers or researchers: 15; and NGO staff: 1)

Annual house income^**

Under $10,000 (109); 10,000 - 30,000 (392); 30,000 - 50,000 (326); Over 50,000 (173)

Mean/Standard deviation: $41,260/569.51

Average house income of Metropolitans in 2008: $43,092^*