Table 3: Changes in health after amalgam removal in subgroups according to the number and combinations of precautions made under amalgam removal.

Number of precautions	Combination of precautions	Improved health (n=233)		Unchanged health (n=29)		Worsening of health (n=26)		Don't know (n=22)
		n	%	n	%	n	%	n	%
0	No precautions	40	60.6	4	6.1	12	18.2
1	Only profilactic treatment	11	78.6	1	7.1	1	7.1	1	7.1
	Only protective equipment	62	65.3	17	17.9	6	6.3	10	10.5
	Only post treatment	7	87.5	0	0.0	1	12.5	0	0.0
2	Profilactic treatment and protective equipment	28	82.4	4	11.8	2	5.9	0	0.0
	Profilactic treatment and post treatment	6	100	0	0.0	0	0	0	0.0
	Protective equipment and post treatment	13	81.3	0	0.0	2	12.5	1	6.3
3	Profilactic treatment and protective equipment and post treatment	66	90.4	3	4.1	2	2.7	2	2.7