Table 2

Table 2. Association between dermatology book type and year published

	Mantel-Haenszel Chi-Square (Linear-by Linear Association)	P-value (2-sided)
Medical	4.673	0.03
Surgical	7.717	0.005^a
Dermatopathology	2.959	0.09^a
Pediatrics	0.002	0.97^a
Cosmetic	5.389	0.02^a

^aExact p-value used, some expected cell counts <5