Table 2.

 Qualitative comparison of cytocentrifugation and Cytyc Thinprep methods (0–3 scale, paired series)

Criteria tested	N	Cytocentrifugation	Cytyc Thinprep LBC	p Value
TPX reusable chamber	44
Cellularity		1.42 (0.65)	1.68 (0.58)	<0.001
Fixation		1.87 (0.70)	2.38 (0.52)	<0.00001
RBC		0.22 (0.39)	0.05 (0.15)	<0.001
Leucocytes		0.31 (0.38)	0.51 (0.49)	<0.02
Cell groups		0.36 (0.64)	0.40 (0.62)	NS
Atypias		0.69 (1.39)	0.77 (1.57)	NS
Positive (%)		6/44 (13.6%)	6/44 (13.6%)	NS
Disposable Cytofunnel	90
Cellularity		1.79 (0.43)	1.56 (0.48)	<0.01
Fixation		2.12 (0.63)	2.54 (0.44)	<0.0001
RBC		0.45 (0.46)	0.06 (0.21)	<0.00001
Leucocytes		0.61 (0.63)	0.61 (0.90)	NS
Cell groups		0.25 (0.39)	0.22 (0.39)	NS
Atypias		0.85 (1.63)	0.72 (1.40)	NS
Positive (%)		3/31 (6.5%)	3/31 (6.5%)	NS
Disposable Megafunnel*	90
Cellularity		1.85 (0.78)	1.69 (0.69)	NS
Fixation		2.17 (0.67)	2.74 (0.35)	<0.00001
RBC		0.50 (0.76)	0.04 (0.14)	<0.001
Leucocytes		0.83 (0.77)	0.45 (0.51)	<0.00001
Cell groups		0.16 (0.42)	0.20 (0.35)	NS
Atypias		0.82 (2.02)	0.77 (1.91)	NS
Positive (%)		3/31 (6.5%)	3/31 (6.5%)	NS

Values are mean (SD).

LBC, liquid based cytology; NS, not significant; RBC, red blood cells.