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Table 2

Univariate correlation to total sleep disturbance for “highly sleep disturbed” and “sleep disturbed”.

Covariate Range HSDdich
SDdich
Chi-Q. p Chi-Q. P
Number 1 1031
L night,road 15 63 23.670 0.000 80.482 0.000
L night,rail 11 63 1.048 0.306 10.880 0.000
L night,air 8 48 12.516 0.000 17.533 0.000
Gender 0 1 6.739 0.009 0.570 0.450
Age 18 97 1.941 0.164 8.071 0.004
Age2 3.319 0.068 8.688 0.003
Noise sensitivity 0 10 24.891 0.000 47.783 0.000
Personal health status 0 10 0.065 0.799 0.021 0.885
Educational level 1 5 4.157 0.041 2.795 0.095
Living here since (years) 1 86 0.168 0.682 2.350 0.125
Ownership house/apartment 1 3 0.208 0.650 4.645 0.031
Access to quiet façade 1 2 2.945 0.086 1.703 0.192
Noise protection given 1 3 9.824 0.002 3.385 0.066
Number of children in household 0 5 0.307 0.580 2.485 0.115

Note: HSDdich = percentage of highly sleep disturbed by noise of multiple sources; SDdich = percentage of sleep disturbed by noise of multiple sources; Chi-Q. = Chi-square; p = significance level meeting the inclusion criteria (p < 0.1) is marked in bold.

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