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Table 2 Univariate and multivariate logistic regression of correlates of insomnia in older adults

From: Factors associated with insomnia in older adult outpatients vary by gender: a cross-sectional study

   

Model 1b

 

Model 2c

 

Characteristica

Unadjusted OR

(95% CI)

p value

Adjusted OR

(95% CI)

p value

Adjusted OR

(95% CI)

p value

Gender (female)

2.00 (1.29-3.09)

0.002

2.25 (1.33-3.82)

0.003

2.35 (1.36-4.06)

0.002

Appetite within 3 months (poor)

3.75 (2.03-6.93)

< 0.001

3.02 (1.53-5.95)

0.001

3.87 (1.88-7.97)

< 0.001

Exercise (none / irregular)

1.73 (1.11-2.68)

0.015

Sleeping pills usage (yes)

2.51 (1.62-3.89)

< 0.001

1.96 (1.21-3.19)

0.006

1.90 (1.14-3.16)

0.013

OSA risk (Medium-High)

2.00 (1.24-3.24)

0.005

2.99 (1.67-5.33)

< 0.001

2.87 (1.56-5.26)

0.001

Depression (GDS ≥ 2)

4.10 (2.53-6.65)

< 0.001

2.69 (1.58-4.56)

< 0.001

2.79 (1.59-4.87)

< 0.001

RLS (yes)

5.55 (1.89-16.35)

0.002

5.22 (1.66-16.40)

0.005

5.10 (1.52-17.14)

0.008

Sleep duration (≤ 6 h)

3.41 (2.12-5.49)

< 0.001

4.13 (2.38-7.17)

< 0.001

  1. Abbreviations: OSA obstructive sleep apnea, GDS Geriatric Depression Scale, RLS restless leg syndrome
  2. aOnly the significant variables in univariate logistic regression analysis are listed here
  3. bLogistic regression analysis with the forward stepwise method in model 1 was adjusted for all factors in the Table 1 except for sleep duration
  4. cResults in model 2 were derived from Model 1 with sleep duration added as another covariate