Vitamin d deficiency and metabolic syndrome: The joint effect on cardiovascular and all-cause mortality in the United States adults

Table 4 Top 10 important predicators for classifying serum 25 Hydroxyvitamin D levels in the total and sex-specific samples

	S1: In both sex		S2: In males		S3: In females		S4: In both sex		S5: In males		S6: In females
	≥ 20 vs < 20		≥ 20 vs < 20		≥ 20 vs < 20		≥ 30 vs < 30		≥ 30 vs < 30		≥ 30 vs < 30
Rank	Predictor	MDG	Predictor	MDG	Predictor	MDG	Predictor	MDG	Predictor	MDG	Predictor	MDG
1	Race	519.5	Race	229.7	Race	267.7	Race	200.0	Race	95.2	Race	103.9
2	Folate	90.4	RBP	19.6	Folate	101.3	Age	97.5	WC	34.0	Age	79.4
3	Sex	57.3	Age	14.8	Age	77.5	Folate	65.1	BMI	29.0	GFR	50.6
4	Region	34.3	Glucose	14.2	GFR	73.7	GFR	54.8	AGE	28.9	Folate	49.6
5	RBP	34.0	GFR	13.1	RBP	50.7	BMI	48.8	Region	24.8	RBP	34.1
6	Poverty	33.3	Poverty	12.8	Poverty	50.1	WC	42.2	GFR	22.7	WC	32.0
7	Edu	30.3	Region	11.9	WC	22.9	Poverty	41.4	Insulin	18.9	SBP	26.9
8	GFR	29.6	WC	11.1	VEP	21.1	RBP	39.8	C1P	18.8	BMI	23.2
9	UAP	27.7	Folate	10.9	SBP	16.1	Glucose	22.0	RBP	18.6	VEP	22.0
10	Alcoh	21.6	Edu	9.8	A1C	14.6	DairyHEI	20.8	Poverty	17.4	Poverty	18.8
Accuracy,%	71.1		70.8		68.0		81.5		79.3		81.8
Precision, %	68.4		68.2		68.2		83.0		82.4		85.6
Recall,%	63.0		47.5		68.5		97.0		93.5		94.0
F1 score, %	65.6		56.0		68.3		89.5		87.6		89.6

S1-S3: Samples 1 to 3. S1 to S3 for the classification of serum 25(OH)D ≥ 20 vs <20 ng/mL. Of them, S1: In the total sample. S2: In males. S3: In females. S4-S6: Samples 4 to 6. S4 to S6 for the classification of serum 25(OH)D ≥ 30 vs <30 ng/mL. Of them, S4: in the total sample. S5: In males. S6: In females. MDG: Mean decrease in Gini index. A higher MDG index indicates higher variable importance; RBP: Red blood cell folate; Edu: Educational level; GFR: Glomerular filtration rate; UAP: Serum uric acid; Alcohol: Alcohol consumption; WC: Waist circumference; BMI: Body mass index; VEP: Serum concentrations of vitamin E; SBP: Systolic blood pressure; A1C: Hemoglobin A1c; DairyHEI: Dairy healthy eating index; C1P: Serum C-peptide.