Table 3.

Analysis of variance results for hot plate test

Groups		Sum of squares	Df	Mean square	F	P value
30 min	Between groups	7,457	3	2,486	91.78	< 0.001
	Within groups	541.6	20	27.08
	Total	7,999	23
60 min	Between groups	9,372	3	3,124	98.66	< 0.001
	Within groups	633.2	20	31.66
	Total	10,005	23
90 min	Between groups	5,034	3	1,678	56.70	< 0.001
	Within groups	591.8	20	29.59
	Total	5,625	23
120 min	Between groups	3,310	3	1,103	90.13	< 0.001
	Within groups	244.8	20	12.24
	Total	3,555	23