Evaluation of vitamin D levels according to demographic characteristics.

Table 4: Evaluation of vitamin D levels according to demographic characteristics.

		Total Vitamin D			P
		n	Mean (ng/mL)	SD	P
Ca intake	< 500 mg	288	19.05	7.98	0.482
	500-1000 mg	237	19.26	8.03
	> 1000 mg	55	20.48	8.6
Fish consumption	None	118	18.73	8.94	0.154
	1-2 times a week	190	20.19	8.11
	1-2 times a month	272	18.86	7.58
Habits	¹Smoking	22	23.94	6.95	0.003^*
	²Alcohol	16	23.12	5.21	1 > 3
	³No	542	18.13	9.73
Habits in females; (Median)	¹Smoking	5	25.06 (24.7)	9.82	0.016^*
	²Alcohol	6	22.50 (21.1)	5.12
	³No	265	16.29 (15.9)	8.33
Habits in males; (Median)	¹Smoking	17	23.62 (24.9)	6.22	0.112
	²Alcohol	10	23.49 (23.9)	5.5
	³No	277	21.52 (20.5)	6.96
Skin color	Dark	228	20.01	7.94	0.074
Skin color	Light	352	18.79	8.11
Use of sunscreen	Yes	108	18.62	8.7	0.351
Use of sunscreen	No	472	19.42	7.91
Time spent in sunny areas during the day	< 15 min	39	17.19	8.9	0.059
	15-60 min	282	18.83	8.72
	> 60 min	259	20.06	7.06
Time spent in sunny areas during the day	< 60 min	321	18.63	8.74	0.030^*
Time spent in sunny areas during the day	> 60 min	259	20.06	7.06
Sports	Yes	466	19.65	7.91	0.021^*
Sports	No	114	17.71	8.49
Physical activity duration	1 < 15 min	41	20.41	8.19	0.034^*
	215-60 min	312	18.99	8.05	2 < 3
	3 > 60 min	113	21.19	7.24
Physical activity duration	< 60 min		19.16	8.06	0.018^*
	> 60 min	353	21.18	7.24
		113
Time spent in school	< 5 hours	285	19.74	8.05	0.164
Time spent in school	> 5 hours	295	18.81	8.05
		N	R	P
Time spent in school		580	-0.07	0.093

R: Spearman correlation coefficient; SD: Standard deviation; ^*p < 005.