TABLE 1.
Changes in the percentages of pockets before and after non‐surgical therapy and relative changes after NST, intended as proportions of pocket reduction or increase after NST
| Pocket depth category | Included studies (groups) | Before NST | One year after NST | Changes in the percentage of pockets | |||||
|---|---|---|---|---|---|---|---|---|---|
| WM (%) | 95% CI | WM (%) | 95% CI | WMD (%) | 95% CI | 95% prediction interval | |||
| Relative increase (%) a | |||||||||
| PD ≤3 mm | 4 | 39.06 | 17.61/60.52 | 64.11 | 37.81/90.41 | — 26.14* | −39.87/−12.40 | −90.72/38.43 | 64.13 |
| PD ≤4 mm | 1 | 44.20 | 31.02/57.38 | 87.47 | 76.68/100.26 | — | — | — | 73.19 |
| Relative reduction (%) a | |||||||||
| PD 4–6 mm | 5 | 41.04 | 19.05/63.03 | 33.63 | 16.87/50.40 | 12.03* | 4.40/19.66 | −22.99/47.06 | 18.05 |
| PD ≥4 mm | 2 (3) | 52.74 | 48.42/57.96 | 18.15 | 9.00/27.24 | 34.01 | 28.63/39.39 | — | 65.59 |
| PD ≥5 mm | 6 (7) | 28.23 | 6.52/50.54 | 11.71 | 7.88/15.54 | 15.50* | 7.86/23.14 | −11.76/42.76 | 58.52 |
| PD ≥6 mm | 2 | 24.60 | −20.11/69.31 | 7.33 | −5.81/20.46 | 17.17* | 14.41/48.74 | — | 70.20 |
| PD ≥7 mm | 7 | 13.65 | 8.05/19.25 | 3.40 | 1.66/5.14 | 10.27* | 5.22/15.31 | −5.32/29.86 | 75.09 |
Abbreviations: NST, non‐surgical therapy; WM, weighted mean; WMD, weighted mean difference.
*
p < .001.
a
Percentage calculated as (100 − “% of PD” value; e.g., 100 − 52.74 = 47.26 in “PD < 4 mm”).