From: Clinical efficacy of intraoral ultrasonography versus transgingival probing for measurement of gingival thickness in different gingival biotypes: a clinical trial
Gender
Number
Mean
Std. deviation
Std. Error of Mean
Diff. at 2 mm
Male
380
0.2175
0.15839
0.00813
Female
300
0.1999
0.15098
0.00872
Diff. at 4 mm
0.2348
0.18155
0.00931
0.2241
0.16656
0.00962