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Table 2 Differences in periodontal parameters between baseline and 6-month follow-up visit (Me [IQR])

From: Influence of adjunctive azithromycin on microbiological and clinical outcomes in periodontitis patients: 6-month results of randomized controlled clinical trial

  Control group Test group p
All probing sites
 PlI (%) 29.0 (15.2–32.6) 22.6 (14.8–34.1) 0.589
 GBI (%) 7.6 (0.0–26.2) 3.7 (1.9–10.2) 0.529
 PD (mm) 1.1 (0.8–1.6) 1.4 (1.1–1.5) 0.358
 REC (mm) − 0.2 (− 0.6 – − 0.1) − 0.3 (− 0.4 – − 0.1) 0.672
 CAL (mm) 0.7 (0.5–1.2) 1.0 (0.7–1.3) 0.287
 BOP (%) 51.2 (36.0–64.4) 49.4 (31.1–66.7) 0.930
Sites with initial PD < 5 mm
 PlI (%) 20.2 (15.1–30.9) 16.1 (9.8–31.0) 0.726
 GBI (%) 8.3 (0.0–22.5) 3.3 (0.6–9.1) 0.547
 PD (mm) 0.5 (0.3–0.7) 0.7 (0.5–0.8) 0.068
 REC (mm) − 0.2 (− 0.5 – − 0.1) −0.2 (− 0.3–0.0) 0.511
 CAL (mm) 0.3 (− 0.1–0.6) 0.5 (0.2–0.7) 0.140
 BOP (%) 46.9 (37.6–63.7) 47.1 (29.7–65.3) 0.884
Initially deep probing sites (PD ≥ 5 mm) without BOP
 PlI (%) 4.5 (0.0–31.8) 27.3 (0.0–35.4) 0.753
 GBI (%) 0.0 (0.0–0.0) 0.0 (− 3.3–0.0) 0.601
 PD (mm) 2.0 (2.0–2.6) 2.6 (2.2–2.9) 0.110
 REC (mm) −0.6 (− 0.9–0.0) −0.3 (− 0.5–0.0) 0.274
 CAL (mm) 1.9 (1.0–2.3) 2.3 (2.0–2.5) 0.151
 BOP (%) / / /
Initially diseased probing sites (PD ≥ 5 mm and BOP)
 PlI (%) 31.0 (23.4–47.0) 33.3 (22.2–46.9) 0.804
 GBI (%) 7.9 (0.0–30.8) 1.6 (0.0–14.8) 0.486
 PD (mm) 2.6 (2.2–2.9) 2.5 (2.3–3.1) 0.849
 REC (mm) −0.4 (− 0.6–0.2) −0.5 (− 0.6 – − 0.3) 0.693
 CAL (mm) 2.1 (1.6–2.4) 2.2 (1.5–2.7) 0.942
 BOP (%) / / /
  1. Me median value, IQR interquartile range, PlI plaque index; GBI gingival bleeding index; PD probing depth; REC recession; CAL clinical attachment loss; BOP bleeding on probing