Use of digital periodontal data to compare periodontal treatment outcomes in a practice-based research network (PBRN): a proof of concept

Table 1 Patients recruited in the participating nine practices

Practice	n	Average age in years	Recorded years	Average time between visits in years
1	70	47.45 [1.00–78.01]	2.09	0.17 ± 0.29
2	409	56.98 [19.97–86.00]	5.15	1.05 ± 1.21
3	1822	56.01 [7.03–90.02]	5.63	0.85 ± 1.28
4	67	56.95 [32.01–87.05]	2.78	0.25 ± 0.39
5	356	56.04 [14.99–82.96]	9.25	1.77 ± 2.06
6	536	56.98 [15.95–88.93]	13.43	1.47 ± 2.37
7	776	54.02 [14.02–91.00]	9.77	0.92 ± 1.34
8	2011	54.07 [3.96–91.94]	18.34	2.65 ± 2.30
9	254	59.50 [21.00–87.90]	3.54	0.58 ± 0.78
Total	6301	55.94 [1.00–91.94]	9.77	1.94 ± 2.16

n = number of treated patients, average age of the patients in years (median [range]), recorded years, average time between visits in years (mean ± SD (standard deviation))

ISSN: 1472-6831