Table 3. Results of Multiple Linear Regressions of Associated Factors with low Bone Mass in Femoral and Lumbar Area, Conducted by Stepwise Method^a.

Variables	Low Lumbar Bone Mass		Low Femoral Bone Mass
	Betab	P value	Beta	P value
BMI Z score	-0.485	< 0.001	-0.653	< 0.001
Weight	-	-	-	-
Physical Activity	-0.181	0.03	-0.295	0.008
Sun exposure	-	-	-	-
Sex	-	-	-	-
Fat mass index	-0.155	0.047	-	-
Puberty	-	-	-	-

^aOnly significant data were presented.

^bBeta: Standardized Coefficient Beta.