Table 3.

Analysis of acute nociceptive threshold (°C) – effect of dextromethorphan.

	Dextromethorphan		Placebo		Treatment
	n	lsmean	n	lsmean	effect	95% CI	P value
Left hand	11	47.50	10	47.46	0.04	−0.41, 0.50	0.8480
Right hand	11	47.54	10	47.62	−0.08	−0.56, 0.41	0.7315
Mean hands	11	47.52	10	47.54	−0.02	−0.40, 0.36	0.9165