Following publication of the original article [1], the author reported the following errors in (Table 2). 1. An entire column at the end is missing 2. An error in 8th column, fifth row („10-96„ instead of „10.96 “) 3. A whitespace missing in the header of the last column ("short-termresponder “ instead of "short-term responder “) The corrected data are formatted bold in the below Table. (Table presented.) Expected number of sites with further attachment loss of more than 1.3 mm, 26 months after mechanical periodontal therapy, based on model predictions. The table presents expected treatment outcomes based on microbial response patterns to antibiotic treatment and placebo across distinct age groups and smoking statuses. All values are expected outcomes for a patient with the number of sites measured being 146 (~24 teeth, the average number of teeth in this study) < 45 6.55 6.02 4.72 4.47 8.14 7.46 5.84 45 < 55 7.74 7.11 5.56 5.27 9.60 8.77 6.89 > 55 9.60 8.82 6.93 6.93 11.93 8.58 < 45 12.06 11.05 8.69 8.69 14.91 13.70 10.77 45 < 55 14.22 13.04 10.23 10.23 17.63 16.13 12.69 > 55 17.67 16.62 12.74 12.74 21.95 20.11 15.78 The original article has been updated.