Table 3 The prevalence, score and OR (95%CI) of depression and poor QoL by quartiles of DPI

Depression score

12 ± 9.59

11.82 ± 9.63

10.65 ± 9.10

9.22 ± 8.55

0.015^a

0.002^a

Depression prevalence

51 (27.9%)

Std. Residual = -0.5

53 (29%)

Std. Residual = -0.6

48 (26.1%)

Std. Residual = -0.2

30 (16.4%)

Std. Residual = 1.3

0.021^b

0.009^c

Depression

Crude

1.00

1.05 (0.67-1.66)

0.91 (0.57-1.44)

0.50 (0.30-0.84)

0.009^c

0.009^c

Model1

1.00

1.04 (0.66-1.64)

0.91 (0.57-1.45)

0.50 (0.30-0.83)

0.008^c

0.009^c

Model2

1.00

1.04 (0.66-1.65)

0.93 (0.58-1.48)

0.51 (0.30-0.85)

0.010^c

0.011^c

Model3

1.00

1.00 (0.63-1.60)

0.84 (0.52-1.36)

0.48 (0.28-0.83)

0.008^c

0.008^c

QoL score

41.60 ± 8.20

41.37 ± 7.76

42.42 ± 8.28

42.87 ± 7.62

0.24^a

0.067^a

Poor QoL prevalence

98 (54.1%)

Std. Residual = -0.8

100 (55.6%)

Std. Residual = -1.1

86 (47%)

Std. Residual = 0.5

77 (42.3%)

Std. Residual = 1.4

0.038^b

0.008^c

Poor QoL

Crude

1.00

1.05 (0.69-1.60)

0.75 (0.49-1.13)

0.62 (0.41-94)

0.024^c

0.008^c

Model1

1.00

1.05 (0.69-1.60)

0.75 (0.49-1.13)

0.62 (0.40-0.93)

0.024^c

0.008^c

Model2

1.00

1.06 (0.70-1.61)

0.77 (0.51-1.16)

0.63 (0.41-0.95)

0.030^c

0.011^c

Model3

1.00

1.11 (0.73-1.70)

0.77 (0.51-1.18)

0.67 (0.43-1.02)

0.066^c

0.023^c