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Table 4 Odds ratios (95% confidence intervals) for frailty, unadjusted and adjusted by covariates

From: Association between anemia and frailty in 13,175 community-dwelling adults aged 50 years and older in China

VariablesModel1Model2Model3Model4
OR (95%CI)Adjusted OR (95%CI)OR (95%CI)Adjusted OR (95%CI)
Anemia1.62**[1.39, 1.90]1.31**[1.09, 1.57]\\
Hb concentration\\0.90**[0.87, 0.92]0.96**[0.93,0.99]
Age
 50–59 ref ref
 60–69 1.99** [1.69, 2.35] 1.98** [1.68, 2.34]
 70–79 3.22** [2.66, 3.89] 3.19** [2.64, 3.86]
 80+ 7.14** [5.45, 9.35] 7.12** [5.43, 9.33]
Gender
 Men ref ref
 Women 1.23* [1.03, 1.46] 1.18 [0.99, 1.41]
Residence
 Urban ref ref
 Rural 0.92 [0.62, 1.37] 0.93 [0.62, 1.37]
Education
 No formal education ref ref
 Less than primary 0.75** [0.62, 0.91] 0.75**[0.62, 0.92]
 Primary school completed 0.68** [0.56, 0.83] 0.69**[0.56, 0.84]
 Secondary school completed 0.71** [0.56, 0.90] 0.72**[0.57, 0.91]
 High school completed 0.66** [0.50, 0.87] 0.66**[0.50, 0.88]
 College completed and above 0.59* [0.39, 0.89] 0.60*[0.40, 0.91]
Wealth quintile
 Q1(Lowest) ref ref
 Q2 0.87 [0.72, 1.06] 0.87 [0.72, 1.05]
 Q3 0.72** [0.59, 0.89] 0.72**[0.58, 0.89]
 Q4 0.69** [0.55, 0.86] 0.68**[0.58, 0.89]
 Q5(Highest) 0.59** [0.44, 0.78] 0.58**[0.44, 0.77]
Fruit and vegetable intake
 Insufficient ref ref
 Sufficient 0.66** [0.57, 0.77] 0.66**[0.57, 0.76]
Alcohol consumption
 Never drinker ref ref
 Non-heavy drinkers 0.78* [0.63, 0.97] 0.79*[0.63, 0.97]
 Infrequent heavy drinkers 1.36 [0.72, 2.59] 1.36 [0.71, 2.59]
 Frequent heavy drinkers 0.75 [0.51, 1.09] 0.76 [0.52, 1.10]
Tobacco use
 Never smoker ref ref
 Not current smoke 1.12 [0.80, 1.56] 1.11 [0.80, 1.56]
 Smoker, not daily 0.97 [0.59, 1.60] 0.98 [0.59, 1.62]
 Current daily smoker 0.93 [0.76, 1.13] 0.93 [0.76, 1.14]
Physical activity
 Lower level ref ref
 Moderate level 0.54** [0.46, 0.64] 0.54**[0.46, 0.63]
 High level 0.36** [0.30, 0.42] 0.36**[0.30, 0.42]
Constant 0.23** [0.15, 0.36] 0.46*[0.25, 0.85]
  1. *P < 0.05, **P < 0.01