Skip to main content
. 2016 Dec 21;10(4):234–240. doi: 10.15171/joddd.2016.037

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