Table 2.

Summary statistics of actual FG removal rates, sampling errors, and percentage of rooms with sampling error ≤ 10% and 5%

	Actual FG removal rate, mean (SD)	Sample error		% with sampling error ≤ 10%	% with sampling error ≤ 5%
		Mean	SD
Number of FG HTS assessments required to represent a room
All rooms (n rooms = 228)
1 HTS per room	75.4% (25.5%)	0.023	0.024	98.2	86.8
2 HTS per room		0.018	0.019	99.6	94.3
3 HTS per room		0.015	0.016	100	95.2
4 HTS per room		0.013	0.012	100	99.6
5 HTS per room		0.011	0.011	100	100
1 HTS in the main room and 1 HTS in the bathroom		0.018	0.022	99.6	94.3
Number of FG HTS assessments required to represent a room based on high or low overall FG removal rate
Removal rate <80% (n rooms = 100)
1 HTS per room	53.0% (23.3%)	0.034	0.027	97.0	74.0
2 HTS per room		0.026	0.022	99.0	87.0
3 HTS per room		0.021	0.019	100	89.0
4 HTS per room		0.017	0.013	100	99.0
5 HTS per room		0.014	0.011	100	100
1 HTS in the main room and 1 HTS in the bathroom		0.025	0.027	99.0	90.0
Removal rate >=80% (n rooms = 128)
1 HTS per room	92.8% (6.3%)	0.015	0.017	99.2	96.9
2 HTS per room		0.011	0.012	100	100
3 HTS per room		0.010	0.011	100	100
4 HTS per room		0.009	0.010	100	100
5 HTS per room		0.008	0.009	100	100
1 HTS in the main room and 1 HTS in the bathroom		0.013	0.015	100	97.7
Number of FG HTS needed to accurately represent daily cleaning and discharge cleaning processes
Daily cleaning (n rooms = 166)
1 HTS per room	70.7% (27.2%)	0.026	0.022	98.2	86.1
2 HTS per room		0.019	0.019	99.4	92.8
3 HTS per room		0.015	0.015	100	95.2
4 HTS per room		0.013	0.012	100	99.4
5 HTS per room		0.012	0.011	100	100
1 HTS in the main room and 1 HTS in the bathroom		0.020	0.024	99.4	92.2
Discharge cleaning (n rooms = 62)
1 HTS per room	87.8% (14.4%)	0.017	0.025	98.4	88.7
2 HTS per room		0.013	0.015	100	98.4
3 HTS per room		0.013	0.017	100	95.2
4 HTS per room		0.012	0.013	100	100
5 HTS per room		0.008	0.010	100	100
1 HTS in the main room and 1 HTS in the bathroom		0.013	0.013	100	100
Number of FG room assessments required to represent a unit (n unit = 13)
1 room	79.8% (10.8%)	0.012	0.015	100	84.6
2 rooms		0.019	0.016	100	100
3 rooms		0.011	0.014	100	100
4 rooms		0.008	0.010	100	100
5 rooms		0.008	0.007	100	100

FG: fluorescent gel markers; HTS: high touch surface.