Table 8.

Incidence and prevalence of dementia among adults 45 years of age and older, by diagnosis code and other criteria at first identification, Saskatchewan (April 1, 2012 to March 31, 2013)

Database and diagnosis code/other criteria	Description of diagnosis code/other criteria	Incident cases			Prevalent cases
		n	Rate per 100 with incident dementiaa	Rate per 10,000 PARb	n	Rate per 100 with prevalent dementiac	Rate per 10,000 PARd
Hospital Discharge Abstract Database (ICD-10-CA Codes)
F00.0	Dementia in Alzheimer’s Disease with early onset	<6	*	*	9	0.07	0.19
F00.1	Dementia in Alzheimer’s Disease with late onset	<6	*	*	16	0.12	0.35
F00.2	Dementia in Alzheimer’s Disease, atypical or mixed type	<6	*	*	19	0.15	0.41
F00.9	Dementia in Alzheimer’s Disease, unspecified	38	1.16	0.85	156	1.20	3.38
F01.0	Vascular dementia of acute onset	<6	*	*	<6	*	*
F01.1	Multifarct dementia	10	0.31	0.22	26	0.20	0.56
F01.2	Subcortical vascular dementia	<6	*	*	7	0.05	0.15
F01.3	Mixed cortical and subcortical vascular dementia	<6	*	*	<6	*	*
F01.8	Other vascular dementia	<6	*	*	14	0.11	0.30
F01.9	Vascular dementia, unspecified	47	1.44	1.05	189	1.45	4.09
F02.0	Dementia in Pick’s disease	<6	*	*	14	0.11	0.30
F02.1	Dementia in Creutzfeldt-Jakob disease	<6	*	*	0
F02.2	Dementia in Huntington’s disease	0			<6	*	*
F02.3	Dementia in Parkinson’s disease	22	0.67	0.49	68	0.52	1.47
F02.4	Dementia in human immunodeficiency virus HIV disease	0			<6	*	*
F02.8	Dementia in other specified diseases classified elsewhere	<6	*	*	16	0.12	0.35
F03	Unspecified dementia	611	18.69	13.61	1,737	13.35	37.60
F04	Organic amnesic syndrome, not induced by alcohol and other psychoactive substances	0			<6	*	*
F05.1	Delirium superimposed on dementia	54	1.65	1.20	158	1.21	3.42
F06.8	Other specified mental disorders due to brain damage and dysfunction and to physical disease	0			15	0.12	0.32
F06.9	Unspecified mental disorder due to brain damage and dysfunction and to physical disease	<6	*	*	108	0.83	2.34
F09	Unspecified organic or symptomatic mental disorder	<6	*	*	14	0.11	0.30
F10.6	Mental and behavioural disorders due to use of alcohol, amnesic syndrome	13	0.40	0.29	61	0.47	1.32
F10.7	Mental and behavioural disorders due to use of alcohol, residual and late-onset psychotic disorder	8	0.24	0.18	59	0.45	1.28
F18.6	Mental and behavioural disorders due to use of volatile solvents, amnesic syndrome	0			0	0.00	0.00
F18.7	Mental and behavioural disorders due to use of volatile solvents, residual and late-onset psychotic disorder	0			0	0.00	0.00
F19.6	Mental and behavioural disorders due to multiple drug use and use of other psychoactive substances, amnesic syndrome	0			<6	*	*
F19.7	Mental and behavioural disorders due to multiple drug use and use of psychoactive substances, residual and late-onset psychotic disorder	0			<6	*	*
G30.0	Alzheimer’s disease with early onset	0			6	0.05	0.13
G30.1	Alzheimer’s disease with late onset	<6	*	*	10	0.08	0.22
G30.8	Other Alzheimer’s disease	0			18	0.14	0.39
G30.9	Alzheimer’s disease, unspecified	24	0.73	0.53	141	1.08	3.05
G31.0	Circumscribed brain atrophy	0			<6	*	*
G31.1	Senile degeneration of brain, not elsewhere classified	<6	*	*	7	0.05	0.15
G91.0	Communicating hydrocephalus	<6	*	*	<6	*	*
G91.2	Normal-pressure hydrocephalus	8	0.24	0.18	49	0.38	1.06
R54	Senility	74	2.26	1.65	161	1.24	3.48
Total Hospital Discharge Abstract Database (ICD-10-CA Codes)		933	28.53	20.78	3,102	23.84	67.14
Physician Services Claims Database & Physician Characteristics Database (ICD-9 Codes)
290	Senile and presenile organic psychotic conditions	441	13.49	9.82	1,709	13.13	36.99
294	Other organic psychotic conditions chronic	23	0.70	0.51	107	0.82	2.32
331	Other cerebral degenerations	471	14.40	10.49	3,205	24.63	69.37
797	Senility without mention of psychosis	44	1.35	0.98	204	1.57	4.42
Total Physician Services Claims Database (ICD-9 codes)		979	29.94	21.80	5,225	40.16	113.09
Prescription Drug Database
Cholinesterase Inhibitor
02232043, 02232044	Aricept	6+	*	*	1,068	8.21	23.12
02242115-02242118, 02245240	Exelon	<6	*	*	63	0.48	1.36
02244298-02244300, 02266717, 02266725, 02266733	Reminyl	<6	*	*	337	2.59	7.29
Total Prescription Drug Database		214	6.54	4.77	1,468	11.28	31.77
Resident Assessment Index – Minimum Data Set (RAI-MDS)
CPS Scale Scoree
2	Mild impairment (MMSE EA 19)	442	13.52	9.84	1118	8.59	24.20
3	Moderate impairment (MMSE EA 15)	441	13.49	9.82	1359	10.44	29.41
4	Moderately severe impairment (MMSE EA 7)	78	2.39	1.74	202	1.55	4.37
5	Severe impairment (MMSE EA 5)	110	3.36	2.45	355	2.73	7.68
6	Very severe impairment (MMSE EA 1)	35	1.07	0.78	91	0.70	1.97
Disease category
mds_l1r	Alzheimer’s Disease and CPS < 2	<6	*	*	11	0.08	0.24
mds_l1v	Dementia other than Alzheimer’s Disease and CPS < 2	6+	*	*	81	0.62	1.75
Total Resident Assessment Index – Minimum Data Set (RAI-MDS)		1,144	34.98	25.48	3,217	24.72	69.63
	TOTAL four databases	3,270	100.00	72.83	13,012	100.00	281.63

*Not reported due to an insufficient number of cases (i.e., between 1 and 5 cases) or an indeterminate number of cases

^aIncident number of case defined dementia (N = 3,270)

^bPopulation at risk for incident dementia (N = 449,012)

^cPrevalent number of case defined dementia (N = 13,012)

^dPopulation at risk for prevalent dementia (N = 462,024)

^eMini-Mental State Examination Equivalent Average (MMSE EA) scores derived from Morris et al. 1994 [50]