Table 3

Logistic regression models for MCI, aMCI and naMCI by residential areas

Total OR (95% CI)Urban OR (95% CI)Rural OR (95% CI)
MCIaMCInaMCIMCIaMCInaMCIMCIaMCInaMCI
Sex (female)1.29*
(1.05 to 1.60)		1.77**
(1.40 to 2.26)		1.72**
(1.21 to 2.45)		0.61**
(0.47 to 0.79)		0.39**
(0.28 to 0.54)		0.65
(0.41 to 1.03)		1.64*
(1.15 to 2.35)		1.24
(0.82 to 1.87)		2.60**
(1.51 to 4.48)
Age, years1.08**
(1.06 to 1.10)		1.09**
(1.07 to 1.11)		1.07**
(1.04 to 1.10)		1.08**
(1.05 to 1.10)		1.09**
(1.07 to 1.12)		1.05
(0.91 to 1.09)		1.07**
(1.04 to 1.11)		1.07*
(1.03 to 1.12)		1.08*
(1.03 to 1.14)
Education, years0.96
(0.94 to 1.18)		0.96**
(0.93 to 0.98)		0.99
(0.95 to 1.02)		0.98
(0.95 to 1.02)		0.94*
(0.90 to 0.98)		1.06
(0.99 to 1.12)		0.97
(0.92 to 1.02)		0.93*
(0.88 to 0.99)		1.07
(0.99 to 1.15)
Having close friends0.67**
(0.54 to 0.84)		0.70**
(0.55 to 0.91)		0.68*
(0.48 to 0.98)		0.98
(0.74 to 1.31)		1.04
(0.74 to 1.46)		0.60*
(0.38 to 0.94)		0.60*
(0.42 to 0.87)		0.60*
(0.40 to 0.91)		0.96
(0.58 to 1.60)
Fish consumption0.24**
(0.18 to 0.30)		0.17**
(0.13 to 0.22)		0.71
(0.44 to 1.13)		0.34**
(0.23 to 0.49)		0.27**
(0.18 to 0.41)		0.61
(0.24 to 1.57)		0.17**
(0.12 to 0.25)		0.12**
(0.08 to 0.17)		0.55*
(0.31 to 0.97)
Cognitive activities0.47**
(0.38 to 0.59)		0.51**
(0.39 to 0.68)		0.52**
(0.35 to 0.77)		0.47**
(0.35 to 0.63)		0.46*
(0.32 to 0.66)		0.66
(0.38 to 1.15)		0.49**
(0.33 to 0.71)		0.59*
(0.38 to 0.91)		0.38*
(0.20 to 0.71)
Insomnia3.05**
(2.46 to 3.78)		5.04**
(3.85 to 6.59)		1.37
(0.98 to 1.91)		5.70**
(4.27 to 7.61)		20.39**
(12.62 to 32.93)		1.51
(0.96 to 2.37)		0.75
(0.52 to 1.08)		1.59**
(1.06 to 2.39)		1.23
(0.73 to 2.06)
Overweight†1.03
(0.84 to 1.27)		0.90
(0.71 to 1.14)		0.60**
(0.40 to 0.90)		0.74
(0.57 to 1.07)		0.69
(0.50 to 1.14)		0.97
(0.63 to 1.51)		0.51**
(0.34 to 0.76)		0.61**
(0.39 to 0.96)		0.34**
(0.17 to 0.66)

  • *p<0.05, **p<0.001.

  • †The body mass index for overweight is greater than or equal to 24.0; it includes both overweight and obesity.

  • aMCI, amnestic mild cognitive impairment; MCI, mild cognitive impairment; naMCI, non-amnestic mild cognitive impairment.