Table 2

HR of prescription for psychotropic medication in 2014 (n=1616) among the study population (n=15 038)

Fixed partPrescription, follow-up 1 January to 31 December 2014
Model 1Model 2Model 3
HR95% CIHR95% CI
Work-unit level variables (level 2)
Any organisational changes*1.131.02 to 1.261.141.02 to 1.26
Number of employees within work unit†
 13–221.000.86 to 1.15
 23–320.950.81 to 1.10
 33–1420.820.70 to 0.96
Individual-level variables (level 1)
 Age group‡
  40–481.411.19 to 1.69
  48–561.681.40 to 2.00
  56–752.091.73 to 2.51
 Male§0.880.77 to 1.02
 Occupational group¶
  Medical doctors/dentists2.331.85 to 2.88
  Social/healthcare workers0.950.80 to 1.13
  Pedagogical workers0.890.63 to 1.25
  Service/technical workers0.940.77 to 1.16
  Administrative workers1.171.00 to 1.35
 Seniority, years**
  5–101.100.94 to 1.28
  11–201.000.85 to 1.19
  ≥210.990.82 to 1.19
  Manager, yes††0.970.79 to 1.21
 Weekly working hours‡‡
  32–371.000.85 to 1.17
  ≥370.770.68 to 0.88
 Contractual employment, yes§§1.000.82 to 1.22
 Personal gross income, DKK¶¶
  345 000–400 0000.900.79 to 1.04
  400 001–480 0000.850.72 to 0.98
  ≥480 0010.860.71 to 1.03
 Sickness absence in 2012, days***
  1–30.910.77 to 1.07
  4–61.201.01 to 1.42
  7–131.521.30 to 1.78
  ≥142.332.01 to 2.70
Random part
ICC (p value), work-unit level (level 2)0.06 (<0.01)0.05 (<0.01)0.02 (0.13)
  • Model 1: Null model with a random intercept for the work-unit level. Model 2: As model 1, but the ‘Any changes’ variable in the fixed part. Model 3: As model 2, but effects of the ‘Any changes’ variable were fully adjusted for all employee-level covariates and number of employees within the work unit.

  • Reference categories

  •   *No change; †3–12 employees within the work unit; ‡age group 19–40; §female; ¶nurses; **1–4 seniority years; ††not manager; ‡‡18.5–32 weekly working hours; §§no contractual employment; ¶¶personal gross income ≤345 000 DKK; ***no days of sickness absence in 2012.

  • DKK, Danish Krone; ICC, intraclass correlation coefficient.