Table 7.

t test

Group	Mean	N	SD	SE mean
Paired samples statistics
Group I bone graft + PRP
Pair 1
Hounsfield units preoperative	280.4400	25	124.66190	24.93238
Hounsfield units post-operative 6 months	649.2800	25	222.01305	44.40261
Pair 2
Hounsfield units preoperative	280.4400	25	124.66190	24.93238
Hounsfield units post-operative 12 months	618.3200	25	225.83636	45.16727
Pair 3
Hounsfield units post-operative 6 months	649.2800	25	222.01305	44.40261
Hounsfield units post-operative 12 months	618.3200	25	225.83636	45.16727
Group II bone graft
Pair 1
Hounsfield units preoperative	341.1200	25	91.30915	18.26183
Hounsfield units post-operative 6 months	508.9200	25	106.92323	21.38465
Pair 2
Hounsfield units preoperative	341.1200	25	91.30915	18.26183
Hounsfield units post-operative 12 months	481.4000	25	117.08152	23.41630
Pair 3
Hounsfield units post-operative 6 months	508.9200	25	106.92323	21.38465
Hounsfield units post-operative 12 months	481.4000	25	117.08152	23.41630