Table 1 Sample characteristics of migrant workers in South Korea

Total

528

278

250

Age (mean)

34.30 (5.68)

34.23 (6.40)

34.37 (4.78)

0.780

Female (%)

262 (49.62)

131 (47.12)

131 (52.40)

0.261

Months in Korea (IQR)

43.00 [29.00, 73.00]

32.00 [25.00, 48.00]

69.00 [40.00, 76.00]

< 0.001

Unemployed (%)

156 (29.55)

74 (26.62)

82 (32.80)

0.145

Industry sector (%)

< 0.001

 Mining /

manufacturing

250 (47.35)

190 (68.35)

60 (24.00)

 Agriculture /

forestry / fishing

23 (4.36)

10 (3.60)

13 (5.20)

 Construction

28 (5.30)

4 (1.44)

24 (9.60)

 Others

71 (13.45)

0 (0.00)

71 (28.40)

Income (%)

< 0.001

 1 million KRW <

16 (3.03)

0 (0.00)

16 (6.40)

 1–1.5 million KRW

116 (21.97)

32 (11.51)

84 (33.60)

 1.5–2 million KRW

180 (34.09)

129 (46.40)

51 (20.40)

 2 million KRW >

60 (11.36)

43 (15.47)

17 (6.80)

Educational attainment (%)

0.036

 College or above

153 (28.98)

90 (32.37)

63 (25.20)

 High school

347 (65.72)

172 (61.87)

175 (70.00)

 Middle school

20 (3.79)

14 (5.04)

6 (2.40)

 Not answered

8 (1.52)

2 (0.72)

6 (2.40)

House size (%)

0.008

 One bedroom

371 (70.27)

205 (73.74)

166 (66.40)

 Two bedrooms /

one bathroom

140 (26.52)

70 (25.18)

70 (28.00)

 Two bedrooms /

two bathrooms

17 (3.22)

3 (1.08)

14 (5.60)

Housing quality score (mean)

16.67 (2.73)

17.10 (2.47)

16.20 (2.94)

< 0.001

Number of cohabitants [IQR]

2.00 [1.00, 3.00]

2.00 [1.00, 2.00]

2.00 [2.00, 3.00]

< 0.001

Marital status (%)

0.144

 Married

(partner in Korea)

29 (5.49)

12 (4.32)

17 (6.80)

 Married

(partner not in Korea)

197 (37.31)

93 (33.45)

104 (41.60)

 Divorced

4 (0.76)

1 (0.36)

3 (1.20)

 Widowed

10 (1.89)

6 (2.16)

4 (1.60)

 Unmarried

270 (51.14)

155 (55.76)

115 (46.00)

 Not answered

18 (3.41)

11 (3.96)

7 (2.80)