Identification of dietary patterns by factor analysis and study of the relationship with nutritional status of rural adolescents using factor scores

Table 7 Classification of subjects according nutritional status with undernutrition and without undernutrition using observed BMI and predicted BMI using scores derived from factor analysis for foods and nutrients

a. Classification results: adolescent boys
BMI			Predicted BMI group according to factor scores derived through factor analysis		Total
BMI			<−2SD	≥ − 2SD	Total
According to BMI	n%	<−2SD	250	216	466
		≥ − 2SD	89	131	220
		<−2SD	53.6	46.4	100
		≥ − 2SD	40.5	59.5	100
Factor scores derived by factor analysis predicted correctly (55.9%) those who are thin as thin and normal as normal group. Adolescent boys (46.4%), who were originally thin (<−2SD) were predicted as normal and 40.5% who were originally normal were predicted as thin.
b. Classification results: adolescent boys
BMI			Predicted BMI group according to factor scores derived through factor analysis		Total
BMI			<−2SD	≥ − 2SD	Total
According to BMI	n%	<−2SD	264	268	532
		≥ − 2SD	57	100	157
		<−2SD	49.6	50.4	100
		≥ − 2SD	36.6	63.7	100

Factor scores derived by factor analysis predicted correctly (52.8%) those who are thin as thin and normal as normal group. Adolescent girls (50.4%), who were originally thin (<−2SD) were predicted as normal and 36.3% who were originally normal were predicted as thin.

ISSN: 2072-1315