Table 3.

Prevalence (%) of bacteria at baseline, after 3 and 6 months and significance of differences

Species	Cat.	Baseline		3 months		6 months		Sig. Δt0-t3 inter	Sig. Δt0-t6 inter	Sig. Δt0-t3 intra	Sig. Δt0-t6 intra
		test	control	test	control	test	control
		N = 23	N = 23	N = 23	N = 23	N = 23	N = 23
A. act.	0-1	82.6	91.3	87	91.3	82.6	91.3	p = 0.156	p = 0.221	pt = 0.625	pt = 0.375
	2	4.3	0	0	4.3	0	4.3
	3 4	13.0 0	0 8.7	4.3 8.7	0 4.3	8.7 8.7	0 4.3			pc = xxx	pc = xxx
P. ging.	0-1	60.8	43.5	73.9	60.9	52.1	39.1	p = 0.693	p = 0.849	pt = 0.289	pt = 0.687
	2	4.3	0	4.3	13.0	0	0
	3 4	0 34.8	8.7 47.8	8.7 13.0	4.3 21.7	17.4 30.4	17.4 43.5			pc = 0.109	pc = 1.000
T. dent.	0-1	13	0	30.4	13	4.3	0	p  =  0.044	p  =  0.224	pt = 0.057	pt = 0.549
	2	4.3	4.3	8.7	17.4	8.7	0
	3 4	0 82.6	17.4 78.3	21.7 39.1	39.1 30.4	26.1 60.9	21.7 78.3			pc = 0.004	pc = 1.000
T. fors.	0-1	8.7	4.3	26	13	13	4.3	p  =  0.632	p  =  0.039	pt = 0.012	pt = 0.754
	2	4.3	0	13	4.3	0	0
	3 4	8.7 78.3	0 95.7	13 47.8	21.7 60.9	26.1 60.9	4.3 91.3			pc = 0.008	pc = xxx
F. nucl.	0-1	4.3	0	0	4.3	4.3	0	p  =  0.029	p  =  0.179	pt = 0.344	pt = 1.000
	2	8.7	0	13.0	4.3	4.3	0
	3 4	8.7 78.3	4.3 95.7	26.1 60.9	0 91.3	17.4 73.9	8.7 91.3			pc = 1.000	pc = xxx
P. micra	0-1	34.7	4.3	52.2	39.1	26.1	13	p  =  0.127	p  =  0.155	pt = 0.035	pt = 1.000
	2	4.3	13.0	8.7	8.7	21.7	13
	3 4	30.4 30.4	47.8 34.8	34.8 4.3	52.2 0	39.1 13.0	65.2 8.7			pc < 0.001	pc = 0.210
C. rectus	0-1	21.7	30.4	56.5	56.5	39.1	39.1	0.507	0.142	pt = 0.002	pt = 0.115
	2	8.7	4.3	21.7	4.3	30.4	13.0
	3 4	56.5 13.0	47.8 17.4	21.7 0	39.1 0	26.1 4.3	43.5 4.3			pc = 0.012	pc = 0.227
P. interm.	0-1	65.2	39.1	78.2	56.5	65.2	34.7	p  =  0.537	p  =  0.605	pt = 0.508	pt = 1.000
	2	4.3	0	4.3	21.7	4.3	0
	3 4	8.7 21.7	8.7 52.2	4.3 13.0	4.3 17.4	21.7 8.7	39.1 26.1			pc = 0.039	pc = 0.344
E. corrod.	0-1	52.2	56.5	73.9	78.2	34.7	65.2	p  =  0.189	p  =  0.364	pt = 1.000	pt = 0.302
	2	13.0	13.0	4.3	8.7	21.7	4.3
	3 4	21.7 13.0	21.7 8.7	13.0 8.7	13.0 0.0	34.8 8.7	21.7 8.7			pc = 0.146	pc = 0.549
A. viscosus	0-1	21.7	4.3	17.3	21.7	8.7	4.3	p  =  0.411	p  =  0.067	pt = 0.118	pt = 0.424
	2	17.4	8.7	8.7	8.7	13.0	30.4
	3 4	47.8 13.0	56.5 30.4	39.1 34.8	52.2 17.4	56.5 21.7	43.5 21.7			pc = 0.210	pc = 0.267

Categories 0 and 1 are summarized and denoted as “0-1”

The depicted significance-values are devided in inter-group (test vs. control) and intra-group (the same group at two different times) comparison

The intragroup significances are devided into those of the test group (p_t) and control group (p_c)