Table 1 Sociodemographic characteristics of the workers employed in two private hospitals, Massachusetts, 2002.

	Hospital 1	Hospital 2	p Value*
	Mean (SD)	Mean (SD)
Age (years)	42.3 (12.9)	40.6 (12.9)	<0.001
Hours worked per week	25.2 (16.2)	25.3 (15.4)	0.40
Hourly wage	21.3 (12.7)	19.9 (9.1)	0.006
	n (%)	n (%)	p Value†
Female gender	1086 (80.2)	1422 (82.7)	0.08
Non‐white ethnicity	119 (8.8)	250 (14.5)	<0.001
Per diem workers	301 (22.2)	371 (21.6)	0.66
Occupational class			<0.001
6—Administrators	49 (3.6)	10 (0.6)
5—Professionals	171 (12.6)	184 (10.7)
4—Nurses	336 (24.8)	532 (30.9)
3—Semiprofessionals	300 (22.2)	284 (16.5)
2—Skilled workers	396 (29.3)	562 (32.7)
1—Semiskilled workers	102 (7.6)	148 (8.6)
Total	1354 (100.0)	1720 (100.0)

*Mann–Whitney two‐sample test.

†χ² test.