TABLE 1.

Distribution of cases and controls according to skin pH

		NUMBER OF SUBJECTS (%)
STUDY GROUPS	SEX	LOW pH	NORMAL pH	HIGH pH
	Male	0	97	3
Controls (N=200)	Female	2	89	9
	Total	2 (1%)	186 (93%)	12 (6%)
	Male	0	23	77
Cases (N=200)	Female	1	21	78
	Total	1 (0.5%)	44 (22%)	155 (77.5%)