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Table 2 The interpretation, the number of covariates and the relative risk of the important feature clusters calculated using the validation cohort. The specific covariate names are in Additional file 1

From: Prediction of conversion from mild cognitive impairment to Alzheimer’s disease and simultaneous feature selection and grouping using Medicaid claim data

Cluster ID

Cluster Interpretation

Number of Covariates

Relative Risk (95% CI)

1

Pain medicine and acid disorder medication

23

0.75 (0.35, 1.14)

2

Electrolyte solution intake

12

1.02 (0.49, 1.55)

3

Apnea

6

0.53 (0.10, 0.95)

4

Infection of Abdomen such as Heptatitis C

12

0.56 (0.01, 1.09)

5

Intervertebral issues

5

1.06 (0.53, 1.59)

6

Age

1

3.19 (2.01, 5.00)

7

Joint Pain

3

0.68 (0.14, 1.23)

8

Diagnosis of cognitive disorder before MCI

2

NA

9

Strong painkillers such as oxycodone

3

0.83 (0.37,1.30)

11

Opioids

1

10

Brain injury or lesion

2

1.09 (0.55, 1.62)

12

Senile dementia

2

1.56 (0.69, 2.43)