Table 2

Factors related to current sleeping problems and high mental distress
Current sleeping problems High mental distress
OR1 SE z p OR1 SE z p
Male2 Ns3 0.66 0.07 −3.84 <0.001
Age4 Ns3 0.98 0.005 −4.72 <0.001
Age*Sex5 0.99 0.002 −5.36 <0.001 Ns3
Education6 1.72 0.19 4.99 <0.001 Ns3
Living with spouse7 Ns3 0.47 0.05 −6.77 <0.001
Smoker8 Ns3 Ns3
Alcohol frequency9 Ns3 Ns3
Alcohol units10 Ns3 Ns3
Exercise11 Ns3 Ns3
Season12 1.86 0.20 5.91 <0.001 Ns3
Painkillers13 Ns3 1.94 0.23 5.57 <0.001
Health14 0.70 0.08 −3.01 0.003 0.18 0.02 −15.57 <0.001
Coping15 Ns3 Ns3
High mental distress16 4.95 0.68 11.67 <0.001 - - - -
Sleeping problems - - - - 4.62 0.64 11.12 <0.001
Constant 0.05 0.01 −22.46 <0.001 0.94 0.27 −0.21 0.835

The table shows the results of stepwise logistic regression with “more sleeping problems than usual during the last couple of weeks” and HSCL-10≥1.85 as dependent variables.

1Odds ratio.

2Males compared to females.

3Not significant.

4Change per year of age.

5Interaction variable “Age*Sex”.

6Educational level: Primary school vs. education beyond primary school.

7Living with spouse compared to living alone.

8Current smoking compared to not smoking.

9Alcohol frequency: 2–3 times per month or more compared to monthly or less.

101-4 units of alcohol per drinking episode compared to 5 units or more.

11Exercise 2 hours per week or more, compared to once per week or less.

12Change between seasons: Winter compared to summer.

13Use of any kind of painkillers weekly or more in the last four weeks.

14General considering of own health (excellent, good, neither good nor bad, bad, very bad).

15Felt unable to cope with difficulties during the past couple of weeks (not at all, no more than usual, rather more than usual, much more than usual).

16HSCL10 score≥1.85.

Johnsen et al.

Johnsen et al. BMC Psychiatry 2012 12:225   doi:10.1186/1471-244X-12-225

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