Table 3.
Summary of data stratification by DT and SDG variables. Legend to Table 3: Ex = excluded; H = homogeneous; IS = incomplete/inadequate stratification; ISOS = incomplete/inadequate stratification by oral subsites; na = not available; NP = not present; NS = not stratified; NSOS = not stratified by oral subsites; S = stratified; SOS = stratified by oral subsites. * Studies on patients treated by non-surgical therapies.
| DISEASE AND TREATMENT VARIABLES (DT) | SOCIODEMOGRAPHIC VARIABLES (SDG) | TOTAL VARIABLES CONSIDERED FOR DATA STRATIFICATION (DT+SDG) | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Article | OC Sample | (1) S/SOS/H/EX/NP | (2) IS/ISOS | (3) NS/NSOS | (4) na | Considered Var (Tot 1 + 2) | Ignored Var (Tot 3 + 4) | (1) S/SOS/H/EX/NP | (2) IS/ISOS | (3) NS/NSOS | (4) na | Considered Var (Tot 1 + 2) | Ignored Var (Tot 3 + 4) | (1) S/SOS/H/EX/NP | (2) IS/ISOS | (3) NS/NSOS | (4) na | Considered Var (Tot 1 + 2) | Ignored Var (Tot 3 + 4) |
| Airoldi 2011 [22] | 50 | 2 | 0 | 3 | 10 | 2 | 13 | 0 | 0 | 7 | 1 | 0 | 8 | 2 | 0 | 10 | 11 | 2 | 21 |
| Beck 2017 [24] | 45 | 2 | 3 | 1 | 9 | 5 | 10 | 0 | 0 | 2 | 6 | 0 | 8 | 2 | 3 | 3 | 15 | 5 | 18 |
| Becker 2012 [23] | 50 | 1 | 4 | 4 | 6 | 5 | 10 | 0 | 0 | 4 | 4 | 0 | 8 | 1 | 4 | 8 | 10 | 5 | 18 |
| Borggreven 2007 [25] | 38 | 1 | 1 | 8 | 5 | 2 | 13 | 3 | 0 | 1 | 4 | 3 | 5 | 4 | 1 | 9 | 9 | 5 | 18 |
| Bozec 2009 [26] | 21 | 3 | 2 | 3 | 7 | 5 | 10 | 3 | 0 | 0 | 5 | 3 | 5 | 6 | 2 | 3 | 12 | 8 | 15 |
| Bozec 2020 [27] | 48 | 1 | 1 | 2 | 11 | 2 | 13 | 7 | 0 | 0 | 1 | 7 | 1 | 8 | 1 | 2 | 12 | 9 | 14 |
| Canis 2016 [28] | 40 | 10 | 1 | 1 | 3 | 11 | 4 | 0 | 0 | 4 | 4 | 0 | 8 | 10 | 1 | 5 | 7 | 11 | 12 |
| Crombie 2014 [10] | 16 | 0 | 1 | 9 | 5 | 1 | 14 | 0 | 0 | 2 | 6 | 0 | 8 | 0 | 1 | 11 | 11 | 1 | 22 |
| Davudov 2019 [29] | 120 | 2 | 0 | 3 | 10 | 2 | 13 | 0 | 0 | 3 | 5 | 0 | 8 | 2 | 0 | 6 | 15 | 2 | 21 |
| Dzioba 2017 [30] | 117 | 2 | 1 | 6 | 6 | 3 | 12 | 0 | 0 | 2 | 6 | 0 | 8 | 2 | 1 | 8 | 12 | 3 | 20 |
| Ferri 2020 [31] | 55 | 12 | 1 | 1 | 1 | 13 | 2 | 0 | 0 | 2 | 6 | 0 | 8 | 12 | 1 | 3 | 7 | 13 | 10 |
| Girod 2009 [32] | 34 | 2 | 2 | 1 | 10 | 4 | 11 | 0 | 0 | 3 | 5 | 0 | 8 | 2 | 2 | 4 | 15 | 4 | 19 |
| Huang 2010 [33] | 129 | 1 | 5 | 1 | 8 | 6 | 9 | 6 | 0 | 0 | 2 | 6 | 2 | 7 | 5 | 1 | 10 | 12 | 11 |
| Infante-Cossio 2009 [34] | 70 | 5 | 1 | 1 | 8 | 6 | 9 | 0 | 0 | 2 | 6 | 0 | 8 | 5 | 1 | 3 | 14 | 6 | 17 |
| Kessler 2004 [35] | 41 | 5 | 1 | 6 | 3 | 6 | 9 | 0 | 0 | 2 | 6 | 0 | 8 | 5 | 2 | 7 | 9 | 7 | 16 |
| Khandelwal 2017 [9] | 50 | 1 | 1 | 3 | 10 | 2 | 13 | 2 | 0 | 0 | 6 | 2 | 6 | 3 | 1 | 3 | 16 | 4 | 19 |
| Klug 2002 [36] | 67 | 5 | 2 | 1 | 7 | 7 | 8 | 1 | 0 | 1 | 6 | 1 | 7 | 6 | 2 | 2 | 13 | 8 | 15 |
| Kovacs 2015 [37] | 110 | 4 | 1 | 3 | 7 | 5 | 10 | 1 | 0 | 1 | 6 | 1 | 7 | 5 | 1 | 4 | 13 | 6 | 17 |
| Lin 2020 [38] | 22 | 5 | 0 | 3 | 7 | 5 | 10 | 0 | 0 | 3 | 5 | 0 | 8 | 5 | 0 | 6 | 12 | 5 | 18 |
| Mair 2017 [39] | 225 | 10 | 1 | 0 | 4 | 11 | 4 | 0 | 0 | 2 | 6 | 0 | 8 | 10 | 1 | 2 | 10 | 11 | 12 |
| Moubayed 2014 [40] | 13 | 2 | 0 | 3 | 10 | 2 | 13 | 0 | 0 | 1 | 7 | 0 | 8 | 2 | 0 | 4 | 17 | 2 | 21 |
| Nordgren 2008 [41] | 122 | 1 | 0 | 2 | 12 | 1 | 14 | 0 | 0 | 3 | 5 | 0 | 8 | 1 | 0 | 5 | 17 | 1 | 22 |
| Oates 2008 [42] | 47 | 1 | 0 | 2 | 12 | 1 | 14 | 0 | 0 | 0 | 8 | 0 | 8 | 1 | 0 | 2 | 20 | 1 | 22 |
| Oskam 2013 [43] | 38 | 0 | 1 | 3 | 11 | 1 | 14 | 2 | 1 | 3 | 2 | 3 | 5 | 2 | 2 | 6 | 13 | 4 | 19 |
| Peisker 2016 [44] | 100 | 0 | 0 | 3 | 12 | 0 | 15 | 0 | 0 | 2 | 6 | 0 | 8 | 0 | 0 | 5 | 18 | 0 | 23 |
| Petruson 2005 * [45] | 30 | 11 | 0 | 1 | 3 | 11 | 4 | 0 | 0 | 2 | 6 | 0 | 8 | 11 | 0 | 3 | 9 | 11 | 12 |
| Pierre 2014 [46] | 37 | 4 | 2 | 3 | 6 | 6 | 9 | 3 | 0 | 0 | 5 | 3 | 5 | 7 | 2 | 3 | 11 | 9 | 14 |
| Schoen 2008 [47] | 41 | 1 | 0 | 3 | 11 | 1 | 14 | 0 | 0 | 2 | 6 | 0 | 8 | 1 | 0 | 5 | 17 | 1 | 22 |
| Van Gemert 2015 [48] | 37 | 5 | 3 | 1 | 6 | 8 | 7 | 1 | 1 | 0 | 6 | 2 | 6 | 6 | 4 | 1 | 12 | 10 | 13 |
| Yoshimura 2009 * [49] | 20 | 13 | 2 | 0 | 0 | 15 | 0 | 2 | 0 | 0 | 6 | 2 | 6 | 15 | 2 | 0 | 6 | 17 | 6 |
| AVG (SD) | 3.7 (3.8) | 1.2 (1.3) | 2.7 (2.2) | 7.3 (3.3) | 5.0 (4.0) | 10.0 (4.0) | 1.0 (1.8) | 0.1 (0.3) | 1.8 (1.6) | 5.1 (1.7) | 1.1 (1.8) | 6.9 (1.8) | 4.8 (3.9) | 1.3 (1.3) | 4.5 (2.8) | 12.4 (3.5) | 6.1 (4.3) | 16.9 (4.3) | |
| WEIGHTED AVG BY OC SAMPLE (SD) | 3.8 (3.7) | 1.3 (1.4) | 2.4 (1.9) | 7.5 (3.2) | 5.1 (3.8) | 9.9 (3.8) | 1.0 (1.9) | 0.0 (0.2) | 1.9 (1.4) | 5.1 (1.6) | 1.0 (1.9) | 7.0 (1.9) | 4.8 (3.7) | 1.3 (1.4) | 4.2 (2.5) | 12.6 (3.2) | 6.1 (4.2) | 16.9 (4.2) | |