Table 3 Univariate and multiple linear regression analysis between measured covariates and DASS scores in the elderly in 2020, Qazvin, Iran

Age

0.04(0.02, 0.05)

P = 0.001

0.03(0.009, 0.04)

P < 0.001

Education

Illiterate

Ref

-

Elementary

-0.19(-0.51, 0.12)

P = 0.235

-

High school

0.26(0.64, 0.11)

P = 0.171

-

Undergraduate

-0.49(-0.82, -0.17)

P = 0.003

-

Post graduate

-1.17(2.56, 0.23)

P = 0.101

-

Comorbidity

Yes

Ref

Ref

No

-0.57(-0.81, -0.32)

P = 0.001

-0.41(-0.67, -0.17)

P = 0.001

Income status

Independency income

Ref

Without income

0.34(0.12, 0.58)

P = 0.003

-

Living status

Only

Ref

-

With mate and children

-0.49(-0.84, -0.14)

P = 0.007

-0.17(-0.51, 0.18)

P = 0.301

With mate only

0.004(-0.25, 0.26)

P = 0.539

0.08(-0.17, 0.32)

P = 0.531

With children only

0.43(0.03, 0.83)

P = 0.036

0.48(0.09, 0.86)

P = 0.016

With others

1.83(0.47, 3.19)

P = 0.008

1.97(0.69, 3.25)

P = 0.003

Insurance status

No insurance

Ref

-

With insurance

-0.24(-0.41, -0.06)

P = 0.008

-

Job status

Employed

Ref

Ref

Retired

0.45(0.08, 0.82)

P = 0.017

0.14(-0.22, 0.49)

P = 0.445

Unemployed

1.22(0.51, 1.94)

P = 0.001

0.77(0.09, 1.45)

P = 0.026

Housewife

0.72(0.35, 1.09)

P < 0.001

0.42(0.06, 0.78)

P = 0.022

Interaction term

 Comorbidity *income

0.68(0.15, 1.22)

P = 0.013