Table 1.

Comparison of basic data between the two groups, n (%) (mean ± SD)

Group	Number of cases	Age (yr)	Man	Woman	Weight (kg)	Course of disease (mo)	Vitamin D consumption D (ng/mL)	Spring (n)	Summer (n)	Autumn (n)	Winter (n)
Observation group	65	7.86 ± 1.56	35 (53.85)	30 (46.15)	25.3 ± 3.18	7.6 ± 2.5	27.5 ± 5.87	15	8	14	28
Control group	65	8.36 ± 1.28	36 (55.38)	29 (44.62)	26.7 ± 3.89	6.9 ± 3.2	26.8 ± 6.21	21	10	11	23
χ 2	/	1.893	0.895	0.968	0.987	0.798	1.562	2.784
P value	/	0.562	0.256	0.527	0.332	0.189	0.636	0.546