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Table 3 Multinomial logistic analysis of factors associated with the latent class

From: Multimorbidity patterns and associated factors in older Chinese: results from the China health and retirement longitudinal study

Latent class

 

Relatively healthy class

Vascular class

Respiratory class

Stomach-arthritis class

Multisystem morbidity class

Independent variables

RRR

RRR

95% CI

RRR

95% CI

RRR

95% CI

RRR

95% CI

Age category (ref = 60–64)

  65–69

1.00

1.33***

[1.17,1.51]

1.54***

[1.21,1.97]

1.13

[0.98,1.31]

1.37**

[1.08,1.74]

  70 + 

1.00

1.36***

[1.21,1.54]

2.17***

[1.73,2.72]

1.17*

[1.01,1.35]

1.46**

[1.17,1.84]

Sex (ref = male)

  Female

1.00

1.56***

[1.35,1.81]

1.25

[0.96,1.64]

1.65***

[1.38,1.98]

1.90***

[1.44,2.50]

Marital status (ref = unmarried)

  Married

1.00

1.07

[0.95,1.21]

1.00

[0.81,1.24]

1.03

[0.89,1.19]

0.87

[0.71,1.08]

Residence (ref = rural)

  Urban

1.00

1.25***

[1.12,1.40]

0.81*

[0.67,1.00]

0.90

[0.78,1.02]

0.92

[0.75,1.13]

Education (ref = less than primary)

  Primary and above

1.00

1.20**

[1.08,1.34]

1.09

[0.90,1.31]

0.95

[0.83,1.08]

1.04

[0.85,1.27]

Medical insurance (ref = no MI)

  UEBMI

1.00

2.49***

[1.76,3.53]

1.32

[0.74,2.37]

1.09

[0.74,1.59]

2.03*

[1.16,3.54]

  RMI

1.00

1.65**

[1.19,2.30]

1.35

[0.80,2.28]

0.93

[0.66,1.31]

1.40

[0.84,2.32]

  NRCMS

1.00

1.54**

[1.12,2.10]

1.25

[0.76,2.04]

1.04

[0.76,1.42]

1.03

[0.64,1.66]

  Other MI

1.00

2.45***

[1.60,3.76]

1.22

[0.56,2.69]

1.49

[0.92,2.42]

2.21*

[1.11,4.40]

Income Quintiles (ref = 1)

  2

1.00

1.24**

[1.05,1.46]

1.23

[0.93,1.63]

1.00

[0.83,1.20]

0.85

[0.64,1.13]

  3

1.00

1.22*

[1.03,1.44]

1.46**

[1.10,1.93]

1.11

[0.92,1.33]

0.90

[0.68,1.20]

  4

1.00

1.15

[0.97,1.36]

1.16

[0.86,1.57]

0.99

[0.81,1.19]

0.82

[0.61,1.10]

  5

1.00

1.25*

[1.03,1.52]

0.98

[0.68,1.42]

0.86

[0.67,1.09]

0.73

[0.51,1.03]

  Missing

1.00

0.95

[0.78,1.16]

1.00

[0.71,1.41]

1.04

[0.84,1.29]

0.79

[0.57,1.11]

Smoking status (ref = never)

  Past or current smoker

1.00

0.95

[0.83,1.09]

2.07***

[1.62,2.65]

1.05

[0.89,1.24]

1.48**

[1.15,1.90]

Alcohol consumption (ref = never)

  Past or current drinker

1.00

1.03

[0.92,1.15]

0.94

[0.78,1.14]

1.12

[0.98,1.28]

0.99

[0.81,1.22]

Physical activity (ref = none)

  Light

1.00

0.87

[0.75,1.02]

0.85

[0.66,1.09]

0.99

[0.82,1.21]

0.69**

[0.54,0.88]

  Moderate

1.00

0.76**

[0.65,0.90]

0.74*

[0.56,0.97]

1.02

[0.83,1.25]

0.53***

[0.41,0.70]

  Intensive

1.00

0.51***

[0.43,0.60]

0.49***

[0.36,0.65]

1.10

[0.90,1.34]

0.40***

[0.30,0.53]

  1. MI is short for medical insurance. UEBMI refers to urban employee basic medical insurance (UEBMI) for urban employees and retirees, NRCMS refers to the new rural cooperative medical scheme (NRCMS) for the rural population, RMI includes the urban resident basic medical insurance (URBMI) for the urban unemployed people, and urban rural resident medical insurance (URRMI) in regions where integrated the NRCMS and URBMI. * p < 0.05, ** p < 0.01, *** p < 0.001
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