Table 3.

Comparisons of the SCL-90-R, PSQI, and SF-36 scores of newspaper couriers and healthy individuals

	Newspaper couriers (n=35)	Healthy individuals (n=35)	t	p
SCL-90-R
Somatization	0.88±0.53	0.59±0.50	2.355	0.021*
Obsessive-compulsive	0.97±0.66	0.82±0.62	0.972	0.335
Interpersonal sensitivity	0.81±0.68	0.78±0.64	0.231	0.818
Depression	0.75±0.68	0.67±0.60	0.515	0.608
Anxiety	0.62±0.51	0.47±0.46	1.259	0.212
Hostility	0.65±0.62	0.67±0.71	−0.119	0.906
Phobic anxiety	0.36±0.47	0.23±0.31	1.377	0.173
Paranoid ideation	0.83±0.66	0.74±0.70	0.558	0.579
Psychoticism	0.54±0.52	0.37±0.44	1.475	0.145
Additional items	0.81±0.69	0.64±0.61	1.059	0.293
Global symptom index	0.72±0.50	0.61±0.47	0.945	0.348
PSQI
Subjective sleep quality	1.23±0.94	0.94±0.64	1.485	0.143
Sleep latency	0.60±0.84	0.81±0.76	−1.122	0.266
Sleep duration	2.11±0.93	0.87±0.80	5.991	0.001*
Habitual sleep efficiency	0.17±0.45	0.40±0.74	−1.565	0.123
Sleep disturbance	0.73±0.64	0.73±0.44	0.013	0.990
Use of sleeping medication	0.00±0.00	0.86±0.37	−1.358	0.179
Daytime dysfunction	0.74±0.78	0.57±0.69	0.975	0.333
Total PSQI score	5.56±3.07	4.41±2.41	1.735	0.087
SF-36
Physical functioning	89.33±13.95	90.76±12.21	−0.456	0.650
Physical role limitations	81.43±23.36	91.07±15.92	−2.018	0.048*
Pain	84.50±15.02	83.52±18.39	0.243	0.809
General health	75.02±15.11	79.31±12.59	−1.293	0.201
Vitality	69.64±14.84	71.07±16.04	−0.387	0.700
Social functioning	76.57±19.84	80.57±20.28	−0.834	0.407
Emotional role limitations	80.00±23.50	89.05±17.12	−1.841	0.070
Mental health	76.76±13.47	79.42±13.02	−0.842	0.403

^*p<0.05.

SCL-90-R: Symptom Checklist-90-R; PSQI: Pittsburg Sleep Quality Index; SF-36: short form-36; t: Student’s t-test