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

From: Adjunctive use of essential oils following scaling and root planing –a randomized clinical trial

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
  1. Categories 0 and 1 are summarized and denoted as “0-1”
  2. The depicted significance-values are devided in inter-group (test vs. control) and intra-group (the same group at two different times) comparison
  3. The intragroup significances are devided into those of the test group (pt) and control group (pc)