Comparative Effectiveness of Collaborative Treatment with Korean and Western Medicine for Low Back Pain: A Prospective Cohort Study

Table 2

Summary of censored data for outcome variables.

Variables	Never censored	Ever censored	Total
Participant (N)
Control group	59	17	76
Case group	69	5	74
Total	128	22	150
Participant (%)
Control group	77.63	22.37	100.00
Case group	93.24	6.76	100.00
Total	85.33	14.67	100.00
Potential periods of observation (day)
Control group	708	204	912
Case group	828	60	888
Total	1536	264	1800
Periods with data available (day)
Control group	708	85	793
Case group	828	35	863
Total	1536	120	1656
Periods with data available (%)
Control group	100.00	41.67	86.95
Case group	100.00	58.33	97.18
Total	100.00	45.45	92.0
Total percent of the periods with censored data (%)	0	54.55	8.00
Total percent of patient numbers censored			14.67%
		Chi-square distance	value
MCAR test result		48.26	0.38
MCAR (CDM) test result		102.77	1.00

MCAR: missing completely at random; CDM: covariate dependent missingness.