Figure and Table | Studies of Health Insurance Claims Data in Japan: A Scoping Review

Table 1. Characteristics of Included Studies.

From: Studies of Health Insurance Claims Data in Japan: A Scoping Review

		All		NDB		JMDC		MDV		DPC		NHI/LSEHS		JHIA		Other/Multiple
	Total	1493	%	102	%	340	%	187	%	584	%	160	%	12	%	108	%
Setting	National	1267	84.9	97	95.1	339	99.7	187	100	567	97.1	2	1.3	2	16.7	73	67.6
	Regional	156	10.4	3	2.9	0	0.0	0	0.0	5	0.9	129	80.6	10	83.3	9	8.3
	Others	70	4.7	2	2.0	1	0.3	0	0.0	12	2.1	29	18.1	0	0.0	26	24.1
Age	Children	94	6.3	7	6.9	33	9.7	7	3.7	39	6.7	3	1.9	0	0.0	5	4.6
	Older persons	134	9	10	9.8	9	2.6	4	2.1	29	5.0	80	50.0	0	0.0	2	1.9
	Others	1265	84.7	85	83.3	298	87.6	176	94.1	516	88.4	77	48.1	12	100.0	101	93.5

» Back to article page

Table 2. Disease Characteristics by Type of Claims Databases.

From: Studies of Health Insurance Claims Data in Japan: A Scoping Review

			Database														Age
	All		NDB		JMDC		MDV		DPC		NHI/LSEHS		JHIA		Other/Multiple		Children		Older persons		Others
Total	1493	%	102	%	340	%	187	%	584	%	160	%	12	%	108	%	94	%	134	%	1265	%
1) Certain infectious and parasitic diseases	117	7.8	15	14.7	29	8.5	16	8.6	41	7.0	4	2.5	0	0.0	12	11.1	14	14.9	0	0.0	103	8.1
2) Neoplasms	162	10.9	6	5.9	22	6.5	31	16.6	92	15.8	4	2.5	3	25.0	4	3.7	2	2.1	2	1.5	158	12.5
3) Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism	19	1.3	0	0.0	0	0.0	3	1.6	15	2.6	0	0.0	0	0.0	1	0.9	4	4.3	0	0.0	15	1.2
4) Endocrine, nutritional, and metabolic diseases	171	11.5	11	10.8	62	18.2	40	21.4	9	1.5	21	13.1	3	25.0	25	23.1	5	5.3	4	3.0	162	12.8
5) Mental, behavioral, and neurodevelopmental disorders	110	7.4	13	12.7	47	13.8	2	1.1	22	3.8	13	8.1	3	25.0	10	9.3	6	6.4	13	9.7	91	7.2
6) Diseases of the nervous system	69	4.6	4	3.9	18	5.3	10	5.3	24	4.1	7	4.4	0	0.0	6	5.6	3	3.2	9	6.7	57	4.5
7) Diseases of the eye and adnexa	22	1.5	1	1.0	13	3.8	1	0.5	3	0.5	0	0.0	0	0.0	4	3.7	0	0.0	0	0.0	22	1.7
8) Diseases of the ear and mastoid process	4	0.3	0	0.0	3	0.9	0	0.0	1	0.2	0	0.0	0	0.0	0	0.0	3	3.2	0	0.0	1	0.1
9) Diseases of the circulatory system	281	18.8	11	10.8	49	14.4	41	21.9	138	23.6	21	13.1	3	25.0	18	16.7	3	3.2	11	8.2	267	21.1
10) Diseases of the respiratory system	135	9.0	11	10.8	38	11.2	10	5.3	56	9.6	13	8.1	0	0.0	7	6.5	24	25.5	22	16.4	89	7.0
11) Diseases of the digestive system	115	7.7	6	5.9	24	7.1	8	4.3	61	10.4	11	6.9	1	8.3	4	3.7	6	6.4	8	6.0	101	8.0
12) Diseases of the skin and subcutaneous tissue	17	1.1	2	2.0	9	2.6	1	0.5	3	0.5	1	0.6	0	0.0	1	0.9	3	3.2	1	0.7	13	1.0
13) Diseases of the musculoskeletal system and connective tissue	93	6.2	7	6.9	25	7.4	16	8.6	36	6.2	5	3.1	0	0.0	4	3.7	5	5.3	7	5.2	81	6.4
14) Diseases of the genitourinary system	75	5.0	4	3.9	15	4.4	9	4.8	34	5.8	7	4.4	1	8.3	5	4.6	1	1.1	5	3.7	69	5.5
15) Pregnancy, childbirth, and the puerperium	25	1.7	4	3.9	9	2.6	1	0.5	11	1.9	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	25	2.0
16) Certain conditions originating in the perinatal period	8	0.5	0	0.0	3	0.9	1	0.5	3	0.5	0	0.0	0	0.0	1	0.9	4	4.3	0	0.0	4	0.3
17) Congenital malformations, deformations, and chromosomal abnormalities	13	0.9	0	0.0	3	0.9	1	0.5	8	1.4	0	0.0	0	0.0	1	0.9	11	11.7	0	0.0	2	0.2
18) Injury, poisoning, and certain other consequences of external causes	110	7.4	11	10.8	9	2.6	3	1.6	77	13.2	9	5.6	0	0.0	1	0.9	7	7.4	22	16.4	81	6.4
19) Others (multidisease, not focused on specific diseases)	238	15.9	21	20.6	41	12.1	21	11.2	69	11.8	68	42.5	0	0.0	18	16.7	16	17.0	50	37.3	172	13.6

» Back to article page

Table 3. Research Theme by Type of Claims Databases.

From: Studies of Health Insurance Claims Data in Japan: A Scoping Review

	All		NDB		JMDC		MDV		DPC		NHI/LSEHS		JHIA		Other/Multiple
Total	1493	%	102	%	340	%	187	%	584	%	160	%	12	%	108	%
Medical treatment status	448	30.0	40	39.2	149	43.8	73	39.0	106	18.2	43	26.9	2	16.7	35	32.4
Intervention effect	447	29.9	17	16.7	85	25.0	60	32.1	259	44.3	15	9.4	1	8.3	10	9.3
Clinical epidemiology, course of diseases	417	27.9	33	32.4	92	27.1	50	26.7	187	32.0	36	22.5	4	33.3	15	13.9
Health economics	211	14.1	10	9.8	47	13.8	43	23.0	42	7.2	44	27.5	3	25.0	22	20.4
Health policy evaluation and utilization	186	12.5	9	8.8	23	6.8	8	4.3	78	13.4	49	30.6	4	33.3	15	13.9
Quality of care	91	6.1	11	10.8	30	8.8	9	4.8	29	5.0	8	5.0	0	0.0	4	3.7
Research methodology	77	5.2	15	14.7	12	3.5	6	3.2	22	3.8	6	3.8	0	0.0	16	14.8
Patient health service utilization	76	5.1	1	1.0	31	9.1	6	3.2	3	0.5	16	10.0	2	16.7	17	15.7
Socioeconomic comparison	56	3.8	8	7.8	7	2.1	2	1.1	14	2.4	17	10.6	2	16.7	6	5.6
Prediction model	36	2.4	1	1.0	4	1.2	2	1.1	22	3.8	3	1.9	0	0.0	4	3.7
COVID-19	11	0.7	0	0.0	1	0.3	5	2.7	4	0.7	1	0.6	0	0.0	0	0.0
Others	8	0.5	0	0.0	4	1.2	0	0.0	2	0.3	1	0.6	0	0.0	1	0.9

» Back to article page

Table 4. List of Research Theme.

From: Studies of Health Insurance Claims Data in Japan: A Scoping Review

Medical treatment status	Diagnosis pattern
	Treatment pattern
	Screening, test, monitoring (frequency, rate)
	Prescription pattern
	Hospitalization, readmission, NICU
	Emergency medicine
	Home-based care
Intervention effect	Effectiveness (treatment, prevention): surgery, procedures, drug, vaccine, periodontal management, follow-up, rehabilitation, health guidance, etc.
	Drug repositioning
	Safety
	Adverse outcomes
Clinical epidemiology, course of diseases	Prevalence, incidence, number of patients
	Association, risk factor, predictor, prognostic factor
	Clinical characteristics (age, sex)
	Comorbidity, underlying conditions
	Mortality, survival, prognosis
	Clinical course
	Surveillance, seasonality, yearly change
Health economics	Cost-effectiveness
	Cost analysis
	Factors associated with medical expenditure
	Economic impact
	Medical billing issues
Health policy evaluation and utilization	Health policy impact: medical subsidy, payment system, drug approval, regulatory action on drug, labeling change on prescriptions OTC switching, clinical guideline, information campaign, etc.
	Hospital performance
	Volume-outcome relationship (other healthcare factors)
	Supply and demand for healthcare
	Post-marketing surveillance
	Analysis of healthcare region
	Use for healthcare planning
	Evaluation of resource consumption
	Analysis of home care service utilization
Quality of care	Adherence to clinical guideline
	Quality indicator
	Safety indicator
	Healthcare benchmarking
Research methodology	Validation study
	Comparison with other data sources
	Patient traceability
	Definition of death
	Correction methods for medical fee revisions
	Development of database
	Development of indicator/algorithm
Patient health service utilization	Adherence, compliance, persistence
	Treatment initiation
	Follow-up visits
	Healthcare utilization
	Healthcare-seeking behavior
	Patient choice, selection
Socioeconomic comparison	Regional variations
	Age and sex distribution
	Income-related inequality
	Residence (home, care facilities)
	Type of health insurance
	International comparison
Prediction model	Predict survival/mortality
	Severe adverse events
	Hospitalization
	Comorbidity scores
	High-need high-cost patients
	Prediction model of infectious disease
COVID-19	Trends in hospitalizations (NICU) during the COVID-19 outbreak
	Changes in intervention/care practice
	Adverse events of COVID-19 vaccines
	School closure and social distancing for COVID-19
	Economic impact of COVID-19 pandemic
Others	Effect of earthquakes
Others	Others

» Back to article page