Table 4 Descriptive statistics and results of Fisher’s Exact test for comparison between oral health behavior, oral health self-assessment, smoking, drinking habits and periodontal disease stage among obese patients
|  | Obesity class I (n = 267) | Obesity class II (n = 47) | P-value | Effect size (v) |
|---|---|---|---|---|
Frequency of cleaning teeth | ||||
 Never | 6 (2.2) | 0 (0) | 0.275 | 0.157 |
 Once a month | 8 (3) | 3 (6.4) | ||
 2–3 times a month | 31 (11.6) | 11 (23.4) | ||
 Once a week | 82 (30.7) | 13 (27.7) | ||
 2–6 times a week | 87 (32.6) | 13 27.7) | ||
 Once a day | 43 (16.1) | 5 (10.6) | ||
 Twice or more a day | 10 (3.7) | 2 (4.3) | ||
Method of cleaning teeth | ||||
 Tooth brush | 260 (99.6) | 47 (100) | 1 | 0.847 |
 Wooden tooth picks | 16 (6.1) | 1 (2.1) | 0.486 | 1.118 |
 Plastic tooth picks | 6 (2.3) | 1 (2.1) | 1 | 1.012 |
 Dental floss | 12 (4.6) | 1 (2.1) | 0.700 | 1.094 |
 mouthwash | 29 (11.1) | 2 (4.3) | 0.193 | 1.117 |
 Miswak\chew stick | 8 (3.1) | 1 (2.1) | 1 | 1.051 |
Self-assessment of oral health | ||||
 Excellent | 3 (1.1) | 0 (0) | 0.406 | 0.133 |
 Very good | 82 (30.7) | 11 (23.4) | ||
 Good | 104 (39) | 16 (34) | ||
 Average | 60 (22.5) | 16 (34) | ||
 Poor | 13 (4.9) | 4 (8.5) | ||
 Very poor | 5 (1.9) | 0 (0) | ||
Smoking | ||||
 Never | 165 (61.8) | 24 (51.1) | 0.422 | 0.084 |
 Once a week | 1 (0.4) | 0 (0) | ||
 Several times a week | 14 (5.2) | 3 (6.4) | ||
 Everyday | 87 (32.6) | 20 (42.6) | ||
Drinking alcohol | ||||
 1 drink | 1 (0.4) | 0 (0) | 1 | 0.048 |
 2 drinks | 2 (0.7) | 0 (0) | ||
 3 drinks | 1 (0.4) | 0 (0) | ||
 Non-drinker | 263 (98.5) | 47 (100) | ||
Periodontal diseases | ||||
 Gingivitis | 180 (67.4) | 20 (42.6) | 0.006* | 0.199 |
 Periodontitis Stage I | 6 (2.2) | 2 (4.3) | ||
 Periodontitis Stage II | 29 (10.9) | 6 (12.8) | ||
 Periodontitis Stage III | 52 (19.5) | 19 (40.4) | ||