Table 1. Codes set descriptions and sizes, the size of the related inclusion/exclusion term sets, and the inclusion/exclusion term sizes as proportions of the original code set size.

Proportions ≤ 100% are displayed in bold.

Cohort definition code sets	Code set size	Number of inclusion terms	Number of exclusion terms	Number of inclusion and exclusion terms as % of code set size
Type 2 diabetes mellitus [19]	116	5	9	12.1%
Cancer except non-melanoma skin cancer [20]	1395	67	144	15.1%
Total knee replacement [21]	40	2	8	25%
Polymyalgia rheumatic [22]	3	1	0	33.3%
Asthma specific [23]	120	4	51	45.8%
Hidradenitis suppurativa (HS) [24]	2	1	0	50%
Shortness of breath excluded [5]	29	11	4	51.7%
Shortness of breath [5]	48	11	14	52.1%
Dementia [25]	74	8	31	52.7%
Non acute heart failure [26]	40	22	0	55%
Ethnicity [27]	183	46	63	59.6%
Potential hospitalized infections [28]	3219	1383	537	59.6%
Tuberculosis [29]	151	4	95	65.6%
Shoulder dislocation [30]	18	2	10	66.7%
Country of birth [27]	467	241	88	70.4%
Giant cell arteritis [22]	7	4	1	71.4%
Type 1 diabetes mellitus [31]	35	4	25	82.9%
Psoriatic arthritis [32]	7	5	1	85.7%
Possible undiagnosed HS [24]	47	40	2	89.4%
Religion [27]	112	72	29	90.2%
Fragility fracture [33]	18	3	14	94.4%
Rheumatoid arthritis [34]	57	13	42	96.5%
Living alone [27]	65	39	25	98.5%
Colorectal cancer [35]	23	9	14	100%
Stevens-Johnson syndrome [36]	1	1	0	100%
Toxic epidermal necrolysis [36]	5	4	1	100%
Myotonic dystrophy type 1 [37]	2	2	0	100%
Marital status [27]	148	34	131	111.5%
Cohabitation [27]	85	22	79	118.8%
Residence [27]	168	92	111	120.1%
Heart failure [26]	55	20	48	123.6%