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Table 3 Multiple logistic regression model for Insomnia Severity Index (ISI) according to subject characteristics

From: The effect of aircraft noise on sleep disturbance among the residents near a civilian airport: a cross-sectional study

Characteristics   Model 1 Model 2
OR 95 % CI OR 95 % CI
Sex Male 1.0   1.0  
Female 1.54 1.31-1.81 1.57 1.24-1.97
Age(years) 20-29 1.0   1.0  
30-39 1.39 0.95-2.04 1.40 0.95-2.06
40-49 1.74 1.22-2.50 1.73 1.21-2.49
50-59 2.27 1.59-3.25 2.17 1.51-3.12
60-69 2.97 2.05-4.30 2.76 1.89-4.02
70-74 3.88 2.52-5.98 3.64 2.35-5.65
Education Never 1.0   1.0  
Elementary school 1.07 0.64-1.77 1.09 0.65-1.81
Middle school 1.22 0.74-2.01 1.25 0.76-2.07
High school 1.15 0.70-1.89 1.19 0.73-1.96
College or more 1.17 0.69-1.96 1.18 0.73-1.98
Residency period(year) <5 1.0   1.0  
5-9 0.93 0.75-1.16 0.93 0.75-1.16
10-14 1.02 0.82-1.27 1.01 0.81-1.26
≥15 0.96 0.77-1.19 0.96 0.77-1.19
Noise exposure group Control 1.0   1.0  
Low-exposure 3.45 2.64-4.50 3.41 2.61-4.46
High-exposure 3.24 2.48-4.22 3.26 2.50-4.25
Drinking No    1.0  
Yes    0.98 0.82-1.16
Smoking Never    1.0  
Past smoker    0.86 0.62-1.21
Current smoker    1.16 0.88-1.53
Regular Exercise No    1.0  
Yes    1.25 1.07-1.45
Operation or hospitalization within 1 year No    1.0  
Yes    1.75 1.37-2.25