Table 1 Characteristics of study participants (n = 1,438 female rural-to-urban migrant workers) in Shenzhen-Dongguan economic zone, China 2013

Cluster 1 (social-demographic)

Age (years)

31.4±9.2

16-25

125 (8.7)

26–35

564 (39.2)

36–45

398 (27.7)

≥46

351 (24.4)

Marital status, married (yes)

997 (69.3)

Medical insurance (yes)

1211 (84.2)

Education

Primary school or lower

290 (20.2)

Middle school

846 (58.8)

High school or above

302 (21.0)

Duration of employment (years)

2.2±3.0

<5.0

1273 (88.5)

5.0~9.9

111 (7.7)

≥10.0

54 (3.8)

Cluster 2 (health-related)

Recent-month self-reported morbidity

973 (67.7)

Body mass index (BMI)

22.4±3.4

<18.5 (Underweight)

139 (9.7)

18.5-23.9 (Normal weight)

932 (64.8)

24.0-27.9 (Overweight)

262 (18.2)

≥28.0 (Obese)

105 (7.3)

Chronic diseases

0

1318 (91.7)

1 or more

120 (8.3)

Cluster 3 (HRQOL domain scores)

Physical functioning (PF)

93.8±10.9

Role physical (RP)

85.9±25.6

Bodily pain (BP)

85.1±16.6

General health (GH)

70.6±18.5

Vitality (VT)

71.4±18.0

Social functioning (SF)

89.9±14.2

Role-emotional (RE)

82.0±28.1

Mental health (MH)

78.4±15.2

Outcomes

Recent 2-week physician visit

0

1319 (91.7)

1 or more

119 (8.3)

Hospitalization in the last year

88 (6.1)

0

1350 (93.9)

1 or more

88 (6.1)