Multivariate Analysis as a Method for Evaluating the Conceptual Perceptions of Korean Medicine Students regarding Phlegm Pattern

Table 1

Characteristics for participants.

	First year	Second year	Third year	Fourth year	Fifth year
Total students	107	113	100	123	99
Refusal	57	65	24	23	15
Participants	50	48	76	100	84
Missing value records	4	7	8	6	7
Finally included records	46	41	68	94	77
Included records
Age, years (M ± SD)	21.1 ± 1.39	23.4 ± 4.76	23.0 ± 1.97	24.8 ± 3.48	25.4 ± 4.08
Male	25	25	38	63	49
Female	21	16	30	31	28
Response rate	43.0%	36.3%	68%	76.4%	77.8%

M: mean.
SD: standard deviation.