Name Steward Organization Suggested Domain Suggested Domain Description Cde Group Classification
4g2. Indicate the total length of time in years that the participant was exposed to repeated hits to the head (e.g. playing American football for 7 years) NACC Disease characterization
Including Alzheimer's Disease (AD)/AD-Related Dementias (ADRD) diagnosis and multiple chronic conditions (MCCs)
 Other NIA-funded studies
  • ▼ NACC
    • ▼ Uniform Data Set
      • ▼ Form name- A5/D2: Participant Health History/Clinician-assessed Medical Conditions
        • ▼ Packet- Initial Visit Packet
          • Variable name- impyears

# Datatype

UUID: f626f5fa-a8a3-5028-bbf7-911e60d83a02

Value List

# Permissible value Value meaning name

UUID: 1b75e68d-bfd6-5a3d-8fcd-e3b479ca2243

0 0

UUID: 28b02839-be83-5047-ba91-07df325da97a

1 1

UUID: 9dc57277-afe4-58c3-80cf-e7f1883e08a9

2 2

UUID: 7ca57312-c9a7-5baf-9c61-efe9336ec7e5

3 3

UUID: 26f8495f-a704-5bbe-9043-b6dcbba7b9c3

4 4

UUID: 2dfd48e9-3063-56f1-9c08-155eb319d01c

5 5

UUID: 7eb74bd1-3b22-55ff-8a52-ca8f4cc32bb1

6 6

UUID: ce21dbb2-2e50-55a2-9060-84a74a178f14

7 7

UUID: 5b1e74c9-83d7-547c-a3ba-11307c77278e

8 8

UUID: a532c2cd-0459-5d18-bb55-a88a4b4c5e55

9 9

UUID: 7da1c67b-73e1-5d40-bc6e-01198ea29e6f

10 10

UUID: 4deeb12c-5fed-543c-8f32-54e7e5a80d3a

11 11

UUID: f69761c0-6601-5f97-b3fb-6561a52f64de

12 12

UUID: 761f6953-9814-5bd4-87b1-7f8aa73c1ee0

13 13

UUID: 2c7b407c-4a2d-5c37-ac22-9d0362346293

14 14

UUID: 0668591d-28f5-5a89-8458-62cd36558c43

15 15

UUID: c582ed31-ef8d-5650-8b90-db1ffc4c6d54

16 16

UUID: 87d37b8f-60ff-5120-a053-3f208e28cf59

17 17

UUID: 6d781711-7784-5db4-bd28-6cf971b63e05

18 18

UUID: 8aa690a5-e961-5ec1-aa0f-5f7c65d6c912

19 19

UUID: 177a3d86-3785-51d3-94ef-9b9a2bec9b26

20 20

UUID: 7b04e61d-b27d-56b8-9fc2-569ccb141484

21 21

UUID: 858ef4be-1ec7-5d5d-9d63-7f23f44a00a3

22 22

UUID: d279a112-6903-5578-af75-a87150db0dd3

23 23

UUID: ba9323c3-9f33-5cf5-9ac8-4e6e11dfab40

24 24

UUID: 4ca90225-16c9-56f0-93e5-c9f76290dd48

25 25

UUID: 7adb24b7-2947-5697-ab4f-03c4befff60f

26 26

UUID: 13e4e4ce-0716-5507-9fe1-71b5b38fd76f

27 27

UUID: 0e0f58ed-e568-5a34-bcc4-132ada60baa3

28 28

UUID: 54cf2176-ff6b-5ecb-bcd7-19849d0fec10

29 29

UUID: 5c2c0d47-872d-530c-95e5-a56cb840f21b

30 30

UUID: fb3d8d47-5170-583b-8d3f-fed5cf1d377e

31 31

UUID: 1bc6c922-0c75-591c-97ec-01b43497ef05

32 32

UUID: b487815f-55f0-59bf-9906-3632ebdf3bcc

33 33

UUID: ada3c378-6e21-5a36-bd75-787595d892ef

34 34

UUID: f980ec3f-acf8-5f75-8e23-11fb40aaa973

35 35

UUID: e7366f96-8aa5-563d-9104-1ab5980d934f

36 36

UUID: 06d241a6-7856-5679-a8a8-a16cf846e5b8

37 37

UUID: b2ba72ec-6d59-546c-99b4-184b9153709d

38 38

UUID: 94dba4fe-239c-5982-9598-541189e856ac

39 39

UUID: 87f1c9e6-5388-5cea-a5b3-1d96f0323977

40 40

UUID: eb2ab663-7f71-5166-8a7a-93c26d53e19e

41 41

UUID: 814cb204-596f-5af0-aed7-d6ea7553527e

42 42

UUID: 6f6ef6f4-fcd6-55da-92a3-d46cdbcb983f

43 43

UUID: ea94b844-f165-5e54-9d0e-532aab22b38e

44 44

UUID: 18eb020d-a67a-5496-9451-32dda67011d4

45 45

UUID: 4bebf53c-43e9-5b55-b189-8430aa1bc469

46 46

UUID: 4ab75941-3de8-5d59-95ae-cdb659b6accc

47 47

UUID: 6eea7ee2-d9c4-5800-a8f4-b85b5c0bdd18

48 48

UUID: 913ceb7e-f575-525f-9f6c-a50cdd4c9da0

49 49

UUID: 89ea8be0-56bb-527a-826c-024bb39bc3b5

50 50

UUID: 2e8c31a4-c0c5-591e-a332-5f367530e070

51 51

UUID: 8cd69615-753d-5d84-a0b0-05de0d52cd8b

52 52

UUID: 49f2f6b1-afd1-5e44-9848-94c9a2770757

53 53

UUID: f8a725e0-9e11-5cc4-90f9-4a4d81d8adcb

54 54

UUID: 4e03db29-21fc-56ca-a850-7edf05d4d3fa

55 55

UUID: 59ea0f02-c32a-5184-a5f6-44c5e81f179f

56 56

UUID: ba1f0720-ece1-592a-9666-542f1b9e593e

57 57

UUID: fedbe861-365c-56aa-a201-3cda3eb51421

58 58

UUID: 423ae5f1-c4eb-594c-9fd5-3b5b7d33fe7b

59 59

UUID: 10d613b1-67c5-5fa0-966d-ebc5dfad100a

60 60

UUID: 38a149b6-d4fd-5529-a850-aee7b52d5f2c

61 61

UUID: 141d8523-81e3-5314-94cc-8a77ab14a6c5

62 62

UUID: fd3a6092-707d-523e-a16e-259eb8381df4

63 63

UUID: 252e2378-77cb-54ef-960c-60158af783f0

64 64

UUID: 1ced7e9d-2dfc-5bcb-8722-c8e9cc649453

65 65

UUID: e623bbe8-4951-5d4c-b497-788757a315ba

66 66

UUID: 323bcd3a-5e25-5f17-8b3a-210416b99b12

67 67

UUID: 4b0202b9-6302-520c-859e-ee73c6edd49f

68 68

UUID: 5b7f6040-7dbe-5875-9255-c00f0746fb3e

69 69

UUID: f3ac8201-d3fc-542b-8810-419920658d76

70 70

UUID: 3a834938-4c26-5228-acbf-5dfd27364f73

71 71

UUID: af102824-f00b-5837-89a5-59d423f00255

72 72

UUID: 7f519c4f-5c7a-5eba-835b-3620fdcd11bc

73 73

UUID: 8d7ecc4f-10ba-511d-9ca1-f47cdd11ea56

74 74

UUID: 4cd9ff1e-d76b-506e-878f-36a577a92e95

75 75

UUID: 7860d255-1028-5159-a9bc-152cf278b085

76 76

UUID: c4d348f3-a8ad-5008-8ba7-82bce50c090b

77 77

UUID: af50a380-62bc-5c52-b539-6aba88935894

78 78

UUID: df950d1d-c825-5a5e-8c9e-6af305ae0e44

79 79

UUID: 635985f6-74be-5d6f-8f75-f7a54be1d098

80 80

UUID: df970060-a6d3-5f6c-b7ab-37e8c9ebdf0b

81 81

UUID: 839613af-610c-5e6f-9349-3c7bc66b93d5

82 82

UUID: e1c38a74-2c61-5cd0-b9f7-d0082c593c30

83 83

UUID: 40bfb7eb-9e46-55ba-a81d-7158a7965846

84 84

UUID: 230d8848-18f0-54da-b147-21103b5a1370

85 85

UUID: 2c867cb9-15f1-5755-82a1-7ae0d847604e

86 86

UUID: aba5797f-5386-563c-a139-a7123d05a010

87 87

UUID: e379b26f-530f-5c11-bb5a-2cfa472eef2e

88 88

UUID: daafa2c2-b542-5e54-9d94-f67a6ced8a37

89 89

UUID: 62588363-810e-5825-9556-1e595ad87dec

90 90

UUID: f2fa85ca-83ef-5dba-807d-e2abe0e069d7

91 91

UUID: 2998ab6c-cad4-5c52-80f4-f847bbbb91b3

92 92

UUID: ec02e8de-1d34-577c-9fcb-1b65220c44af

93 93

UUID: 50c614ec-e798-5add-addf-5421dc24b51f

94 94

UUID: 3ddb965f-b770-5eed-b357-d2ef2ec1f240

95 95

UUID: 4a241ea7-ff0a-5f9d-bed0-6e181eb9e205

96 96

UUID: 99dd3111-5321-5c1c-9587-e746b1c3379f

97 97

UUID: 13de192f-7f77-544a-baee-09032a97c58a

98 98

UUID: 6c448b9e-0e59-5756-8fa5-3f2ede61d390

99 99

UUID: 333f5dc6-bd72-538d-a1d9-3491eb87c787

100 100

UUID: 6a3d71e5-d304-5366-b436-bd988d1dc298

101 101

UUID: f0ea568e-8fb9-5040-8209-39ff539421a9

102 102

UUID: da77c5d6-8eab-5912-940e-4fb46dccde81

103 103

UUID: 8cfaaaad-26aa-5c56-9056-5e0b3d2b700f

104 104

UUID: f724acc9-37f6-5d17-90b3-165b9086f50e

105 105

UUID: 06492d82-f2ae-55b5-a31f-fd89c78d6cf2

106 106

UUID: 06aaf13a-bd3d-50b1-a8ed-5fc08b28c673

107 107

UUID: 53d5502c-1fff-5450-acac-4904d0df69bd

108 108

UUID: 1f2e6f4b-f26b-5641-a870-7b2e3474e385

109 109

UUID: ead30324-d172-54d0-882e-a49e80c74568

110 110

UUID: c57beb4f-7b8d-5297-9d28-56d9101270d5

999 999 = Unknown

# Identifier Origin Version

UUID: c31332be-517b-59e6-865a-de64a4f850da

UDS_a5d2_Initial Visit Packet_impyears NACC-source_dataset+form_name+packet+var_name NACC_uds-v4-ivp-ded-11122025