Table 2 The associations of multimorbidity with the number of body pain and sleep duration among people aged 45 years and older in China, 2011–2018

Multimorbidity

1.53 (1.45, 1.61)

< 0.001

-0.26 (-0.36, -0.15)

0.004

Age (years)

1.05 (1.04, 1.05)

< 0.001

0.01 (-0.01, 0.03)

0.357

Female

1.39 (1.28, 1.51)

< 0.001

-0.39 (-0.50, -0.28)

0.001

Married/partnered

0.98 (0.90, 1.06)

0.587

0.12 (0.05, 0.18)

0.011

Primary school

1.20 (1.09, 1.33)

< 0.001

0.10 (-0.02, 0.22)

0.078

Secondary school and above

1.21 (1.09, 1.34)

< 0.001

0.09 (-0.06, 0.25)

0.148

Urban residence

0.78 (0.72, 0.85)

< 0.001

-0.05 (-0.18, 0.08)

0.303

Public health insurance

1.11 (1.03, 1.20)

0.009

0.04 (-0.15, 0.22)

0.586

Middle locations

1.11 (1.01, 1.23)

0.034

-0.06 (-0.21, 0.08)

0.271

West locations

1.06 (0.97, 1.16)

0.198

-0.26 (-0.31, -0.22)

< 0.001

Household consumption quartile 2

1.05 (1.00, 1.10)

0.049

-0.03 (-0.20, 0.14)

0.608

Household consumption quartile 3

1.11 (1.05, 1.17)

< 0.001

-0.04 (-0.09, 0.02)

0.139

Household consumption quartile 4 (the most affluent)

1.09 (1.03, 1.15)

0.004

0.005 (-0.10, 0.11)

0.890

Impaired ADLs

1.53 (1.46, 1.60)

< 0.001

-0.41 (-0.60, -0.21)

0.008

Impaired IADLs

1.36 (1.30, 1.42)

< 0.001

-0.16 (-0.36, 0.03)

0.073