Table 2 Factors affecting the turnover of newly graduated nurses by univariate Cox regression analysis

 Graduation year (ref: 2008)

2009

1.21

0.267

0.87

1.68

2010

1.52**

< 0.001

1.14

2.03

 Age at graduation

1.04*

0.022

1.01

1.08

 Gender (ref: male)

Female

0.73

0.078

0.51

1.04

 Marital status (ref: no)

Yes

1.24

0.397

0.75

2.06

 Educational level of father (ref: less high school)

Father

1.04

0.751

0.82

1.33

Mother

1.11

0.498

0.82

1.50

 Family income (ref: < 2 million won monthly)

2–5 million won

0.88

0.352

0.67

1.15

≥5 million won

0.80

0.236

0.56

1.16

 Degree (ref: college)

University

0.77*

0.036

0.60

0.98

 Admission type (ref: new entrance)

Transfer

1.39

0.129

0.91

2.13

 Selection reason (ref: employment prospect)

Aptitude

0.94

0.688

0.70

1.26

Others

1.04

0.813

0.77

1.39

 Location (ref: capital)

Metropolitan

1.32

0.071

0.98

1.77

Non-metropolitan

1.27

0.091

0.96

1.69

 Moving direction for working (ref: to the major cities)

In the same area

1.21

0.138

0.94

1.55

To the minor cities

1.36

0.082

0.96

1.91

 Union (ref: no)

Yes

0.48**

< 0.001

0.38

0.61

 Shift (ref: no)

Yes

1.30

0.096

0.95

1.77

 Size (ref: small)

Medium

0.66**

0.008

0.49

0.90

Large

0.51**

< 0.001

0.39

0.67

 Salary (ref: < 2.0 million won)

2.0–2.5 million won

0.68**

0.004

0.53

0.88

2.5–3.0 million won

0.34**

< 0.001

0.23

0.48

≥ 3.0 million won

0.47**

0.004

0.28

0.79

 Size and salary (ref: small, < 2.0 million won)

Small, 2.0–2.5 million won

0.73

0.140

0.48

1.11

Small, 2.5–3.0 million won

0.39

0.188

0.09

1.59

Small, ≥ 3.0 million won

1.63

0.629

0.23

11.78

Medium, < 2.0 million won

0.81

0.333

0.52

1.25

Medium, 2.0–2.5 million won

0.58*

0.012

0.38

0.89

Medium, 2.5–3.0 million won

0.27**

0.001

0.12

0.59

Medium, ≥ 3.0 million won¹

–

–

.-

.-

Large, < 2.0 million won

0.69

0.082

0.46

1.05

Large, 2.0–2.5 million won

0.48**

< 0.001

0.32

0.72

Large, 2.5–3.0 million won

0.28**

< 0.001

0.18

0.43

Large, ≥ 3.0 million won

0.42**

0.003

0.24

0.74

Job dissatisfaction (ref: satisfaction or neutral)

Salary

1.25

0.102

0.96

1.63

Stability of employment

3.01**

< 0.001

2.04

4.46

Working environment

1.62**

< 0.001

1.25

2.08

Working hours

1.39**

< 0.001

1.09

1.76

Career prospect

1.55**

< 0.001

1.17

2.05

Relationship

1.69**

< 0.001

1.26

2.28

Welfare benefit

1.16

0.338

0.86

1.55

Performance appraisal

1.05

0.737

0.79

1.40

Social esteem

1.55*

0.026

1.05

2.27

Autonomy and authority

1.47**

< 0.001

1.11

1.93

Overall organization

2.74**

< 0.001

2.15

3.50

Overall profession

2.09**

< 0.001

1.59

2.75