Table 4 Moderation effects of ERI and social support on UEMDs using logistic regression adjusted for education, job title, marital status, work duration, and income

ERI

Social support

OR(95%CI)

OR(95%CI)

OR(95%CI)

OR(95%CI)

Low

High

1

1

1

1

Low

Low

0.88

(0.38–2.04)

0.95

(0.49–1.87)

2.37*

(1.05–5.35)

1.39

(0.65–2.98)

High

High

1.76

(0.89–3.45)

1.14

(0.63–2.08)

2.38*

(1.13–5.01)

1.77

(0.91–3.43)

High

Low

3.11**

(1.58–6.13)

2.79**

(1.39–5.56)

3.39**

(1.64–7.00)

3.83**

(1.98–7.41)

Synergy index

3.32

18.24

0.87