Table 4 Open in new tab Prevalence and...

Chronic disease or health service	Total (N = 188 351)	Provided blood (N = 38 799)
Chronic diseases
Coronary artery disease	26 599	13 639	983.6	7591	2752	1297.6
Stroke	4652	5496	339.7	1219	1139	432.2
Ischaemic stroke	4484	5344	329.9	1174	1116	422.9
Hypertension	44 827	16 775	1394.5	12 322	3109	1780.7
Diabetes type 1	1271	1074	68.8	200	164	64.4
Diabetes type 2	9404	6773	433.6	2188	1227	481.8
Asthma	28 472	3867	275.6	5454	627	267.1
COPD	11 159	7208	465.7	2883	1225	489.7
Colitis	3188	1800	109.7	864	305	113.7
Crohn's	3486	1202	73.3	862	184	68.5
Dementia	372	1764	105.8	119	296	108.3
Congestive heart failure	1932	2777	168.2	500	442	163.6
Rheumatoid arthritis	2133	1330	80.5	718	255	94.7
HIV	529	133	8.0	112	16	5.8
Sepsis	731	2680	161.0	186	429	157.1
Pneumonia	6551	7786	489.0	1445	1183	451.7
Health services utilization
Hospitalizations	105 829	61 434	3664	22 507	10 218	3712.9
Mental health hospitalizations	2566	2552	152.2	520	295	107.2
Emergency department visits	135 986	128 617	7670.8	29 123	24 960	9069.7
Number of MRIs
1	30 210	36 123	2360	2154	7697	2796.8
2	10 993	15 391	956.7	918	3285	1193.7
3	4682	7463	457.4	445	1486	540
≥4	5308	10 369	584.9	618	2149	780.9

Chronic disease or health service

Total (N = 188 351)

Provided blood (N = 38 799)

Prevalence

Incidence^b

Prevalence

Incidence^b

Per 100 000 person-years

Chronic diseases

Coronary artery disease

26 599

13 639

983.6

7591

2752

1297.6

Stroke

4652

5496

339.7

1219

1139

432.2

Ischaemic stroke

4484

5344

329.9

1174

1116

422.9

Hypertension

44 827

16 775

1394.5

12 322

3109

1780.7

Diabetes type 1

1271

1074

68.8

200

164

64.4

Diabetes type 2

9404

6773

433.6

2188

1227

481.8

Asthma

28 472

3867

275.6

5454

627

267.1

COPD

11 159

7208

465.7

2883

1225

489.7

Colitis

3188

1800

109.7

864

305

113.7

Crohn's

3486

1202

73.3

862

184

68.5

Dementia

372

1764

105.8

119

296

108.3

Congestive heart failure

1932

2777

168.2

500

442

163.6

Rheumatoid arthritis

2133

1330

80.5

718

255

94.7

HIV

529

133

8.0

112

5.8

Sepsis

731

2680

161.0

186

429

157.1

Pneumonia

6551

7786

489.0

1445

1183

451.7

Health services utilization

Hospitalizations

105 829

61 434

3664

22 507

10 218

3712.9

Mental health hospitalizations

2566

2552

152.2

520

295

107.2

Emergency department visits

135 986

128 617

7670.8

29 123

24 960

9069.7

Number of MRIs

30 210

36 123

2360

2154

7697

2796.8

10 993

15 391

956.7

918

3285

1193.7

4682

7463

457.4

445

1486

540

≥4

5308

10 369

584.9

618

2149

780.9

Chronic disease or health service	Total (N = 188 351)	Provided blood (N = 38 799)
Chronic diseases
Coronary artery disease	26 599	13 639	983.6	7591	2752	1297.6
Stroke	4652	5496	339.7	1219	1139	432.2
Ischaemic stroke	4484	5344	329.9	1174	1116	422.9
Hypertension	44 827	16 775	1394.5	12 322	3109	1780.7
Diabetes type 1	1271	1074	68.8	200	164	64.4
Diabetes type 2	9404	6773	433.6	2188	1227	481.8
Asthma	28 472	3867	275.6	5454	627	267.1
COPD	11 159	7208	465.7	2883	1225	489.7
Colitis	3188	1800	109.7	864	305	113.7
Crohn's	3486	1202	73.3	862	184	68.5
Dementia	372	1764	105.8	119	296	108.3
Congestive heart failure	1932	2777	168.2	500	442	163.6
Rheumatoid arthritis	2133	1330	80.5	718	255	94.7
HIV	529	133	8.0	112	16	5.8
Sepsis	731	2680	161.0	186	429	157.1
Pneumonia	6551	7786	489.0	1445	1183	451.7
Health services utilization
Hospitalizations	105 829	61 434	3664	22 507	10 218	3712.9
Mental health hospitalizations	2566	2552	152.2	520	295	107.2
Emergency department visits	135 986	128 617	7670.8	29 123	24 960	9069.7
Number of MRIs
1	30 210	36 123	2360	2154	7697	2796.8
2	10 993	15 391	956.7	918	3285	1193.7
3	4682	7463	457.4	445	1486	540
≥4	5308	10 369	584.9	618	2149	780.9

Table 4

Open in new tab

Prevalence and incidence of select chronic diseases and health services utilization in the Ontario Health Study, overall and among those who provided a blood sample^a

Chronic disease or health service	Total (N = 188 351)			Provided blood (N = 38 799)
	Prevalence	Incidence^b		Prevalence	Incidence^b
	n	n	Per 100 000 person-years	n	n	Per 100 000 person-years
Chronic diseases
Coronary artery disease	26 599	13 639	983.6	7591	2752	1297.6
Stroke	4652	5496	339.7	1219	1139	432.2
Ischaemic stroke	4484	5344	329.9	1174	1116	422.9
Hypertension	44 827	16 775	1394.5	12 322	3109	1780.7
Diabetes type 1	1271	1074	68.8	200	164	64.4
Diabetes type 2	9404	6773	433.6	2188	1227	481.8
Asthma	28 472	3867	275.6	5454	627	267.1
COPD	11 159	7208	465.7	2883	1225	489.7
Colitis	3188	1800	109.7	864	305	113.7
Crohn's	3486	1202	73.3	862	184	68.5
Dementia	372	1764	105.8	119	296	108.3
Congestive heart failure	1932	2777	168.2	500	442	163.6
Rheumatoid arthritis	2133	1330	80.5	718	255	94.7
HIV	529	133	8.0	112	16	5.8
Sepsis	731	2680	161.0	186	429	157.1
Pneumonia	6551	7786	489.0	1445	1183	451.7
Health services utilization
Hospitalizations	105 829	61 434	3664	22 507	10 218	3712.9
Mental health hospitalizations	2566	2552	152.2	520	295	107.2
Emergency department visits	135 986	128 617	7670.8	29 123	24 960	9069.7
Number of MRIs
1	30 210	36 123	2360	2154	7697	2796.8
2	10 993	15 391	956.7	918	3285	1193.7
3	4682	7463	457.4	445	1486	540
≥4	5308	10 369	584.9	618	2149	780.9

Chronic disease or health service	Total (N = 188 351)			Provided blood (N = 38 799)
	Prevalence	Incidence^b		Prevalence	Incidence^b
	n	n	Per 100 000 person-years	n	n	Per 100 000 person-years
Chronic diseases
Coronary artery disease	26 599	13 639	983.6	7591	2752	1297.6
Stroke	4652	5496	339.7	1219	1139	432.2
Ischaemic stroke	4484	5344	329.9	1174	1116	422.9
Hypertension	44 827	16 775	1394.5	12 322	3109	1780.7
Diabetes type 1	1271	1074	68.8	200	164	64.4
Diabetes type 2	9404	6773	433.6	2188	1227	481.8
Asthma	28 472	3867	275.6	5454	627	267.1
COPD	11 159	7208	465.7	2883	1225	489.7
Colitis	3188	1800	109.7	864	305	113.7
Crohn's	3486	1202	73.3	862	184	68.5
Dementia	372	1764	105.8	119	296	108.3
Congestive heart failure	1932	2777	168.2	500	442	163.6
Rheumatoid arthritis	2133	1330	80.5	718	255	94.7
HIV	529	133	8.0	112	16	5.8
Sepsis	731	2680	161.0	186	429	157.1
Pneumonia	6551	7786	489.0	1445	1183	451.7
Health services utilization
Hospitalizations	105 829	61 434	3664	22 507	10 218	3712.9
Mental health hospitalizations	2566	2552	152.2	520	295	107.2
Emergency department visits	135 986	128 617	7670.8	29 123	24 960	9069.7
Number of MRIs
1	30 210	36 123	2360	2154	7697	2796.8
2	10 993	15 391	956.7	918	3285	1193.7
3	4682	7463	457.4	445	1486	540
≥4	5308	10 369	584.9	618	2149	780.9

Includes participants who consented to administrative linkages and were successfully linked; outcomes were ascertained through linkage to the validated disease registries developed by ICES; mean (SD) age in years is 47 (15) overall and 57 (10) among those who provided a blood sample.

Ascertained through linkage with the various disease cohorts/data sets covering the period from baseline to 31 March 2020 with the exception of congestive heart failure, which was ascertained through to 31 March 2019.

COPD, chronic obstructive pulmonary disease; HIV, human immunodeficiency virus; MRI, magnetic resonance imaging.

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