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Table 2 Range of test values for each category

From: Identifying suppressive factors of Alzheimer’s disease through comprehensive analysis of real-world data: a single-center retrospective study

Laboratory test items

Category

Range of test value

VB1 (ng/mL)

1

 < 21.3

2

 ≥ 21.3, ≤ 81.9

3

 > 81.9

VB12 (pg/mL)

1

 < 233

2

 ≥ 233, ≤ 914

3

 > 914

Folate (ng/mL)

1

 ≤ 3

2

 > 3

Folate (ng/mL)

1

 < 4

2

 ≥ 4

Free T3 (pg/mL)

1

 < 2.1

2

 ≥ 2.1, ≤ 4.1

3

 > 4.1

BNP (pg/mL)

2

 ≤ 40

3

 > 40

TSH (µU/mL)

1

 < 0.34

2

 ≥ 0.34, ≤ 3.5

3

 > 3.5

Free T4 (ng/dL)

1

 < 0.7

2

 ≥ 0.7, ≤ 1.7

3

 > 1.7

T3 (ng/dL)

1

 < 80

2

 ≥ 80, ≤ 180

3

 > 180

T4 (µg/dL)

1

 < 5

2

 ≥ 5, ≤ 12

3

 > 12

  1. Range of laboratory test values used when categorizing each laboratory test item. Folate had the same laboratory test name but different laboratory test methods, which were distinguished using the last number