Table 2: Comparison of Mean IL-12 between Healthy and Periodontitis patients based on Smoking Status (Smoker and Nonsmoker).

Group Periodontal Status N Mean SD Test Result
Nonsmoker Healthy 11 246.09 372.62 Z=-0.775
P=0.438
Periodontitis 10 123.70 160.13
Sum 21 187.81 291.35
Smoker Healthy 10 248.90 312.99 Z=-0.68
P=0.496
Periodontitis 10 152.00 157.39
Sum 20 200.45 246.19
Total Population Healthy 21 247.43 336.91 Z=-1.043
P=0.297
Periodontitis 20 137.85 155.21
Sum 41 193.97 266.97