Table 3. Correlation of anxiety levels with GI (gingival index) and PI (plaque index) in smokers and non-smokers and healthy subjects .
Anxiety Level | GI (mean ± SD ‡ ) | PI (mean ± SD ‡ ) | ||||
Smokers | Non-smokers | Healthy | Smokers | Non-smokers | Healthy | |
Mild | 1.46 ± 0.19 | 2.13 ± 0.21 | - | 1.97 ± 0.32 | 2.02 ± 0.17 | 0.63 ± 0.26 |
Moderate | 1.71 ± 0.21 | 2.66 ± 0.30 | - | 2.17 ± 0.28 | 2.33 ± 0.08 | 0.54 ± 0.28 |
Severe | 2.25 ± 0.41 | 2.84 ± 0.06 | - | 2.61 ± 0.52 | 2.68 ± 0.19 | 0.78 ± 0.20 |
P-value | <0.001* | <0.001* | - | 0.005§ | <0.001* | 0.5116† |
*highly significant
†non significant
‡SD = Standard deviation
§P < 0.05, significant