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Table 1 Sociodemographic factors and Psychological well-being

From: Association between second-hand smoke and psychological well-being amongst non-smoking wageworkers in Republic of Korea

Variables    Psychological well-being  
  Total Poor Fair
Number Number (%) Number (%) p-value
Total   19,879 7,200 (36.2) 12,679 (63.8)  
Gender Male 5,963 2,071 (34.7) 3,892 (65.3) 0.004*
Female 13,916 5,129 (36.9) 8,787 (63.1)
Age <29 3,781 1,219 (32.2) 2,562 (67.8) <0.001*
30–39 5,705 1,818 (31.9) 3,887 (68.1)
40–49 5,710 2,090 (36.6) 3,620 (63.4)
50–59 3,115 1,288 (41.3) 1,827 (58.7)
>60 1,568 785 (50.1) 783 (49.9)
Education Middle school or lower 2,502 1,277 (51.0) 1,225 (49.0) <0.001*
High school 7,700 3,019 (39.2) 4,681 (60.8)
Junior college 3,620 1,183 (32.7) 2,437 (67.3)
College or higher 6,057 1,721 (28.4) 4,336 (71.6)
Monthly income (KRW)a <1 million 4,032 1,707 (42.3) 2,325 (57.7) <0.001*
1–2 million 9,137 3,369 (36.9) 5,768 (63.1)
2–3 million 3,913 1,331 (34.0) 2,582 (66.0)
>3 million 2,789 790 (28.3) 1,999 (71.7)
Balancing income and expenses Difficult 4,175 942 (22.6) 3,233 (77.4) <0.001*
Somewhat difficult 5,625 1,753 (31.2) 3,872 (68.8)
Somewhat easy 6,914 2,957 (42.8) 3,957 (57.2)
Easy 3,165 1,548 (48.9) 1,617 (51.1)
Marital status not married 11,362 4,192 (36.9) 7,170 (63.1) 0.023**
married 8,517 3,008 (35.3) 5,509 (64.7)
Self-rated physical health very bad 39 23 (59.0) 16 (41.0) <0.001*
bad 605 425 (70.2) 180 (29.8)
moderate 5,158 2,620 (50.8) 2,538 (49.2)
good 11,957 3,688 (30.8) 8,269 (69.2)
very good 2,120 444 (20.9) 1,676 (79.1)
Hypertension no 18,906 6,782 (35.9) 12,124 (64.1) <0.001**
yes 973 428 (43.0) 555 (57.0)
Obesity no 19,520 7,054 (36.1) 12,466 (63.9) 0.085**
yes 359 146 (40.7) 213 (59.3)
  1. *Obtained by a chi-squared test
  2. **Obtained by a fisher’s exact test
  3. aObtained data after 8 missing data were excluded