Table 3.
Paired T-test (group A).
Groups | Periodontal parameters | N | Mean | Std. deviation | Std. error mean | Mean difference | t-value | p-value |
---|---|---|---|---|---|---|---|---|
Pair 1 | PI-0 | 30 | 2.47 | 0.51 | 0.09 | 1.37 | 12.17 | <0.001 |
PI-1 | 30 | 1.10 | 0.48 | 0.09 | ||||
Pair 2 | PI-1 | 30 | 1.10 | 0.48 | 0.09 | 0.23 | 2.04 | 0.05 |
PI-2 | 30 | 0.87 | 0.43 | 0.08 | ||||
Pair 3 | PI-0 | 30 | 2.47 | 0.51 | 0.09 | 1.60 | 15.56 | <0.001 |
PI-2 | 30 | 0.87 | 0.43 | 0.08 | ||||
Pair 4 | GBI-0 | 30 | 2.43 | 0.50 | 0.09 | 1.60 | 12.11 | <0.001 |
GBI-1 | 30 | 0.83 | 0.46 | 0.08 | ||||
Pair 5 | GBI-1 | 30 | 0.83 | 0.46 | 0.08 | 0.53 | 5.76 | <0.001 |
GBI-2 | 30 | 0.30 | 0.47 | 0.09 | ||||
Pair 6 | GBI-0 | 30 | 2.43 | 0.50 | 0.09 | 2.13 | 16.00 | <0.001 |
GBI-2 | 30 | 0.30 | 0.47 | 0.09 | ||||
Pair 7 | PD-0 | 30 | 5.67 | 0.84 | 0.15 | 2.37 | 16.95 | <0.001 |
PD-1 | 30 | 3.30 | 0.84 | 0.15 | ||||
Pair 8 | PD-1 | 30 | 3.30 | 0.84 | 0.15 | 1.13 | 8.00 | <0.001 |
PD-2 | 30 | 2.17 | 0.38 | 0.07 | ||||
Pair 9 | PD-0 | 30 | 5.67 | 0.84 | 0.15 | 3.50 | 28.10 | <0.001 |
PD-2 | 30 | 2.17 | 0.38 | 0.07 | ||||
Pair 10 | CAL-0 | 30 | 3.63 | 0.85 | 0.16 | 2.30 | 16.80 | <0.001 |
CAL-1 | 30 | 1.33 | 0.80 | 0.15 | ||||
Pair 11 | CAL-1 | 30 | 1.33 | 0.80 | 0.15 | 1.10 | 8.46 | <0.001 |
CAL-2 | 30 | 0.23 | 0.43 | 0.08 | ||||
Pair 12 | CAL-0 | 30 | 3.63 | 0.85 | 0.16 | 3.40 | 25.72 | <0.001 |
CAL-2 | 30 | 0.23 | 0.43 | 0.08 |
There is significant change in all the four variables viz. PI, GBI, PD and CAL at all the time points with p-value less than 0.01. Bold signifies P< 0.05.
PI, plaque index; GBI: Gingival bleeding index; PD, pocket depth; CAL, clinical attachment level.