Table 5

Factor pattern of self estimated risk factors for fatigue in the workplace by factor analysis with varimax rotation (n=314)

		Factor loading
		Factor 1	Factor 2	Factor 3	Factor 4
Frequent bending forward or half sitting	0.182	0.124	0.688	0.090
Much static work posture	0.155	0.033	0.742	0.138
Frequent lifting and handling of objects	0.034	0.179	0.729	0.172
Frequent repetitive work with shoulders, arms, hands, or fingers	0.349	0.151	0.474	0.134
Much unplanned work	0.159	0.371	0.307	0.342
Difficulties in lowering work load at reduced working capacity	0.325	0.417	0.241	0.313
Too many different tasks	0.116	0.484	0.276	0.264
Too much responsibility	0.193	0.703	0.132	0.161
Too much work	0.175	0.591	0.386	0.390
Shortage of staff	0.239	0.353	0.145	0.338
Great time pressure	0.154	0.665	0.083	0.251
Much concentration required	0.248	0.549	0.030	0.009
Extra work due to poor physical condition of colleagues	0.423	0.219	0.155	0.121
Work after sick leave, maternity leave, and childcare leave	0.598	0.085	0.204	0.307
Difficulties in acting on one's own ideas	0.728	0.229	0.100	0.135
Difficult human relations at work	0.612	0.301	0.189	0.083
Lack of frank discussion about work problems	0.752	0.282	0.031	0.022
Responsibilities other than tasks at work	0.475	0.159	0.083	0.286
Role ambiguity in the workplace	0.828	0.051	0.197	0.114
Inexperienced in handling tasks	0.496	0.074	0.077	0.178
Many admissions and discharges	0.452	0.229	0.137	0.367
Many patients with serious disabilities	0.205	0.371	0.292	0.684
Many patients with a sudden change in condition	0.283	0.328	0.207	0.755
Many admissions with emergencies	0.517	0.152	0.152	0.579