2. Adverse events: Morley 2003, incidence of dizziness, "low‐dose" methadone phase.

		Methadone 10 mg daily		Total
Dizziness		yes	no
Placebo	yes	0	0	0
	no	6	13	19
Total		6	13	19

The proportion of observations in the different categories which define the contingency table is significantly different than is expected from random occurrence (P = 0.041, Chi² = 4.167, with 1 degree of freedom).