Table 3 The impact of covariates on the development trends of self-reported overall QoL in the 3-class solution

  Age

1.02

(0.99–1.05)

0.99

(0.97–1.01)

  Gender, male

2.84^***

(2.02–3.98)

0.73

(0.57–1.94)

  Ethnicity, Han

3.21^**

(1.44–7.16)

1.10

(0.70–1.72)

  Financial resources, enough

1103.03^***

(152.00–8004.62)

81.25^***

(54.68–120.74)

  Smoking status, current smoker

0.78

(0.55–1.12)

0.63

(0.48–1.44)

  Drinking status, current drinker

1.52

(1.07–2.17)

0.97

(0.72–1.29)

  Eat fresh fruit

23.31^***

(12.82–42.37)

6.30^***

(4.78–8.30)

  Eat meat

4.44^***

(2.67–7.38)

2.16^***

(1.59–2.91)

  Eat fish

6.02^***

(3.80–9.55)

1.69^***

(1.30–2.19)

  Eat eggs

2.83^***

(1.75–4.57)

1.91^***

(1.39–2.63)

  Drink tea

2.20^***

(1.59–3.05)

1.68^***

(1.30–2.16)

  Bathing disability

1.98

(0.48–2.65)

1.10

(0.36–3.37)

  Dressing disability

0.33

(0.07–1.59)

0.13^**

(0.03–0.51)

  Toileting disability

0.77

(0.13–4.65)

0.52

(0.12–2.19)

  Transferring disability

0.58

(0.11–3.17)

0.08^*

(0.01–0.70)

 Continence disability

–

–

–

–

  Feeding disability

0.77

(0.13–4.65)

0.21

(0.04–1.25)

  Do physical labor regularly

0.12^***

(0.07–0.19)

0.71

(0.45–1.12)

  Do housework

0.23^***

(0.15–0.36)

1.09

(0.72–1.67)

  Read newspapers/books

23.05^***

(14.97–35.50)

1.69^**

(1.17–2.45)

  Watch TV or listen to the radio

11.17^***

(5.51–22.68)

1.96^***

(1.46–2.63)

  Take part in some social activities

25.29^***

(15.97–40.08)

1.28

(0.83–1.96)