Table 3: Comparison of mean OHI-S score, Russell’s Periodontal Index and gingival bleeding score between study and control group within substance abusers.

Substance abusers (subgroups)NMean OHI-S scoreMean Russell’s IndexMean bleeding on probing

Alcohol442.6643.66414.36
Tobacco smoking92.2783.9785.56
Cannabis72.5143.18614.00
Alcohol + tobacco smoking922.7934.0097.82
Alcohol + tobacco chewing302.9373.54711.13
Alcohol + T. smoking + T. chewing172.7183.4297.41
Alcohol + T. smoking + cannabis102.9603.9509.20
Alcohol/T. smoking/T. chewing + others412.4343.1329.07

Total2502.7043.6839.69