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. 2021 Sep 12;9(9):1940. doi: 10.3390/microorganisms9091940

Table 3.

Comparison of clinical parameters between countries (first comparison) and among periodontal status groups (second comparison).

Health and Gingivitis a Periodontitis I-II a Periodontitis III-IV a Second Comparison
(among Periodontal Status b)
First
Comparison
n Mean (SD) p Value n Mean (SD) p Value n Mean (SD) p Value p Value
PD (mm) Spain 30 2.26 (0.31) 0.359 30 2.90 (0.39) 0.037 30 4.04 (0.76) 0.069 <0.001
Colombia 18 2.17 (0.27) 23 3.19 (0.57) 36 3.72 (0.65)
PD 1–3 mm (%) Spain 30 98.37 (3.14) 0.148 30 77.38 (14.17) 0.073 30 43.08 (21.77) 0.083 <0.001
Colombia 18 94.83 (12.62) 23 68.42 (21.38) 36 50.19 (9.73)
PD 4–5 mm (%) Spain 30 1.60 (3.12) 0.145 30 20.78 (12.71) 0.110 30 38.04 (14.06) 0.170 <0.001
Colombia 18 5.16 (12.62) 23 24.07 (17.07) 36 33.41 (13.00)
PD ≥ 6 mm (%) Spain 30 0.01 (0.10) 0.445 30 1.82 (2.06) 0.174 30 18.86 (14.52) 0.424 <0.001, Health and Gingivitis versus Periodontitis III-IV
<0.001, Periodontitis I-II versus Periodontitis III-IV
Colombia 18 0 23 3.19 (4.91) 36 16.36 (10.66)
CAL (mm) Spain 30 0.33 (0.24) 0.521 30 3.07 (0.39) 0.660 30 4.78 (0.85) 0.237 <0.001
Colombia 18 0.28 (0.26) 23 3.16 (0.96) 36 4.52 (0.93)
BoP (%) Spain 30 15.53 (15.01) 0.251 30 32.71 (17.01) <0.001 30 63.87 (26.33) 0.024 <0.001
Colombia 18 10.94 (9.45) 23 68.82 (38.93) 36 79.69 (28.65)
PlI (%) Spain 30 50.97 (25.07) <0.001 30 62.69 (25.59) 0.736 30 76.00 (24.20) 0.465 <0.001, Health and Gingivitis versus Periodontitis I-II
<0.001, Health and Gingivitis versus Periodontitis III-IV
Colombia 18 22.77 (13.78) 23 65.86 (38.77) 36 70.27 (36.49)

Probing depth (PD); clinical attachment level (CAL); bleeding on probing (BoP); plaque index (PlI). SD, standard deviation; n, number of patients. a, Student t test. b, One-way ANOVA test.