Table 2

Patient status and resource utilisation: function, early retirement, sick leave and hospitalisation

20002001200220032004    /200720082009201020112012
FFbH12* (mean±SD)64.6±25.360.9±24.862.6±24.864.2±25.062.1±25.861.5±24.763.4±24.165.9±25.964.8±25.867.7±26.870.3±25.4
FFbH12*>75 (HAQ<1, %)36.128.832.836.633.731.530.042.437.144.748.5
Early retirement (% of pts <65 years of age)19.318.119.719.121.615.715.017.215.414.413.9
 Female16.716.717.417.719.716.015.917.213.916.116.5
 Male20.819.021.320.122.915.514.417.316.213.412.4
Sick leave during past 12 months (% of employed pts <65 years of age)44.246.736.637.330.730.832.031.034.132.928.8
Days of sick leave† (mean±SD, median)49.4±69.756.3±63.567.4±97.842.1±60.242.3±68.543.9±77.037.9±61.033.7±62.136.6±65.430.7±51.637.7±60.4
24.528.028.021.021.018.020.014.015.015.016.5
Hospitalisation during past 12 months (%)10.710.69.811.311.912.511.411.311.210.49.5
Days of hospitalisation† (mean±SD, median)22.0±20.221.4±15.020.5±14.416.7±9.218.9±21.516.8±17.416.2±14.912.3±7.612.5±6.114.3±12.615.5±19.0
20.017.515.514.014.014.013.012.014.012.014.0
  • *FFbH12-Hannover function questionnaire (12 back-specific items), measures portion of full functional capacity in a range of 0–100.

  • †Cumulative days in the past 12 months per patient with episodes of sick leave or hospitalisation, respectively.