Table 1.

Distribution of characteristics that differed significantly in respirator users vs. non-users.

		Respirator users		Respirator non-users
	Characteristic	nA = 1904	%	nA = 8479	%	p-value
Sex	Female	1246	67.2	6096	74.2	<0.01
	Male	609	32.8	2116	25.8
Facility type	Hospital	1543	82.5	5599	67.3	<0.01
	Ambulatory setting	272	14.5	2514	30.2
	Residential/social care	56	3.0	202	2.4
Major occupational	Nurse	969	51.5	4746	57.0	<0.01
group	Therapist	419	22.3	306	3.7
	Physician	190	10.1	909	10.9
	Technologist/technician	188	10.0	1194	14.3
	Dentist/dental practitioner	53	2.8	816	9.8
	Pharmacist/pharmacy practitioner	25	1.3	134	1.6
Detailed occupation+	Respiratory therapist	418	22.3	303	3.6	<0.01
	Nurse anesthetist	239	12.7	1458	17.5
	Physician anesthesiologist	186	9.9	905	10.9
	Oncology nurse	155	8.3	671	8.0
	Hematology/oncology nurse	131	7.0	510	6.1
	Gastroenterology/endoscopy nurse	116	6.2	481	5.8
Time spent in direct	76–100%	1213	64.6	5901	71.0	<0.01
patient care	51–75%	285	15.2	1053	12.7
	26–50%	157	8.4	465	5.6
	1–25%	177	9.4	526	6.3
	0	46	2.5	363	4.37
Urban vs. rural work	Large city (≥50,000 people)	1191	63.6	4693	56.6	<0.01
setting	Small city (<50,000 people)	357	19.0	1781	21.5
	Suburbs/rural	326	17.4	1818	21.9
Size of employer	>1000 workers	819	43.8	2593	31.3	<0.01
	100–1000 workers	652	34.8	2713	32.8
	1–99 workers	401	21.4	2979	36.0

The denominator for each percentage is the column total (i.e., group total of users or non-users) that answered each question minus any non-responses.

^ANumber of respondents varied for individual items (i.e., those who elected not to answer).

⁺Occupations that represented more than 5% of overall responses.