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Table 1 Descriptive statistics of the sample

From: Relation between insertion torque and tactile, visual, and rescaled gray value measures of bone quality: a cross-sectional clinical study with short implants

Variable Frequency Mean SD 95% confidence interval
Patient 20    
 Sex (female) 12    
 Age (years)   52 12 [46–58]
Implant per arch
 Maxilla 22    
 Mandible 22    
Implant per region
 Premolar 10    
 Molar 34    
Insertion torque
 < 15 N cm 17    
 15 to 35 N cm 15    
 > 35 N cm 12    
Tactile evaluation
 Bone type 1 1    
 Bone type 2 8    
 Bone type 3 21    
 Bone type 4 14    
CT visual evaluation
 Bone type 1 1    
 Bone type 2 5    
 Bone type 3 16    
 Bone type 4 11    
CT mean gray values
 ROI axial   1581 241 [1499–1664]
 ROI coronal   1560 220 [1485–1636]
 ROI sagittal   1373 205 [1303–1443]
 Average of ROIs   1505 206 [1434–1576]