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Table 1 Description of the study population and the categories of the Nurse-WIS (n = 1592)

From: Nurse-work instability and incidence of sick leave – results of a prospective study of nurses aged over 40

Variables % (n)
Gender
 Female 91.8% (1462)
 Male 8.2% (130)
Age
 40 to 44 years 18.0% (286)
 45 to 49 years 26.1% (416)
 50 to 54 years 29.0% (462)
 55 to 59 years 21.0% (334)
  > 60 years 5.9% (94)
Occupational training
 Qualified nurse or geriatric care worker 88.4% (1408)
 Nursing assistant without nursing training 11.6% (184)
Facility
 Clinic or hospital 84.5% (1346)
 Old people’s home, nursing home, facility for the handicapped 15.5% (246)
Length of service
 0–20 years 9.7% (154)
 21–30 years 34.9% (555)
 More than 30 years 55.5% (883)
Scope of employment
 Full-time 55.0% (875)
 Part-time (<  35 h a week) 45.0% (717)
Working hours
 Rotating shifts excluding nights 30.6% (487)
 Rotating shifts including nights 45.2% (720)
 Day duty, always at the same times 17.0% (271)
 Only night work 7.2% (114)
Principal activity
 Nursing work 36.4% (579)
 Administrative work 6.3% (100)
 Equal parts of both 57.3% (913)
Nurse-WIS
 No risk (0 points) 19.7% (313)
 Slight risk (1–9 points) 7.7% (123)
 Moderate risk (10–19 points) 33.2% (528)
 High risk (20–28 points) 39.4% (628)