Sex estimation using maxillary sinus volume for Chinese subjects based on cone-beam computed tomography

BMC Oral Health

Table 6 Sex estimation equations based on different values

	Independent Variable	Equation	SD	Accuracy	Sensitivity	Specificity	PPV	NPV
Original	VL cm³	Logit(p)=-1.118 + 0.067X	0.2311	78.57%	65.71%	91.43%	88.46%	72.73%
Original	VR cm³	Logit(p)=-1.099 + 0.065X	0.2892	74.29%	51.43%	97.14%	94.74%	65.38%
Cross-Validation	VL cm³	Logit(p)=-1.118 + 0.067X	0.2189	76.67%	66.67%	86.67%	83.33%	72.22%
Cross-Validation	VR cm³	Logit(p)=-1.099 + 0.065X	0.2190	73.33%	53.33%	93.33%	88.89%	66.67%

Logit(p) the probability value obtained by the equation, VL the volume of the left maxillary sinus, VR the volume of the right maxillary sinus; sensitivity, the proportion of samples tested as male; specificity, the proportion of samples tested as female, PPV the proportion of samples judged to be male by the test that is actually male, NPV the proportion of samples judged to be female by the test that is actually female

ISSN: 1472-6831