Table 3.

Mean CSFP of All Patients Greater and Less Than the Median BMI

	Total Sample CSFP (mm Hg)	Men Only CSFP (mm Hg)	Women Only CSFP (mm Hg)	Percentage Difference (Men − Women)
BMI 18–25	9.8 ± 2.5	10.1 ± 2.7	9.6 ± 2.4	5.0, P < 0.0001
BMI 27–39	11.9 ± 2.6	12.1 ± 2.5	11.7 ± 2.7	3.3, P < 0.0001

The percentage difference between the male and female groups is included in the last column. Significance is based on the null hypothesis that the mean male CSFP will not differ from the mean female CSFP.