Table 6.

Correlation between MMAS scale and vitamin usage condition.

	MMAS (0~1 Month)	MMAS (1~3 Month)	MMAS (3~6 Month)
Vitamin usage (0~1 month)	−0.999 (p < 0.001 ***)	-	-
Vitamin usage (1~3 month)	-	−0.798 (p < 0.001 ***)	-
Vitamin usage (3~6 month)	-	-	−0.633 (p < 0.001 ***)

The correlation between MMAS score and vitamin usage record were calculated by Spearman’s correlation. Abbreviation: MMAS, Morisky Medication Adherence Scale. *** p < 0.001. The range of MMAS were scored 0 (low compliance) to 8 (high compliance). The vitamin usage condition was defined by the vitamin usage record: 0 = Took vitamins on time; 1 = Forgot to take vitamins ≤2 times per week; 2 = Forgot to take vitamins >2 times per week; 8 = Did not take vitamins for a period of time (gastroenteritis, go abroad, etc.); 9 = Discontinued because of seizure-related side effects.