Table 2. PNM posterior probabilities of previously identified periodically expressed genes.

Method	No. of genes	PNM tested	Pmean	P > 0.95		Source
Traditional approach	104	102	0.865	78	76.5%	Spellman et al. (1)
Visual inspection	421	409	0.808	289	70.7%	Cho et al. (2)
Fourier transformation	800	788	0.822	540	68.5%	Spellman et al. (1)
SPM overlap-1	1106	1041	0.698	539	51.8%	Zhao et al. (7)
SPM overlap-2	260	257	0.963	229	89.1%	Zhao et al. (7)
SPM overlap-3	78	78	0.997	77	98.7%	Zhao et al. (7)

Pmean: mean posterior probability of each list. Pmean of PNM selected 822 genes is 0.992.

SPM overlap-1, 2, 3 are the lists of the genes which passed the SPM threshold one, two and three times in experiment cdc28, alpha and cdc15 according to the data from the authors’ website.

Overlaps of gene lists of traditional approach (T), Cho et al. (C), Spellman et al. (S) and Zhao et al. (Z) are: T–C 73, T–S 95, T–Z 88, C–S 304, C–Z 304 and S–Z 525.