Table 1 Descriptive statistics of the analytical sample by late-onset epilepsy and Alzheimer’s disease status, full UCLA patient population (N = 416,212)a.

From: Multi-task learning identifies shared genetic risk for late-onset epilepsy and alzheimer’s disease

 

Late-onset epilepsy

Alzheimer’s disease

Cases

Controls

P-value

Cases

Controls

P-value

N = 7,351

N = 408,861

N = 6,706

N = 409,506

Primary outcome(s)

 Alzheimer’s disease (Yes)

571 (7.8%)

6,135 (1.5%)

< 0.001*

6,706 (100%)

0 (0%)

-

 Late onset epilepsy (Yes)

7,351 (100%)

0(0%)

-

571 (8.5%)

6,780 (1.7%)

< 0.001*

Demographics

 Age at first visit (in years)

60.89 (11.44)

60.10 (11.32)

< 0.001*

65.75 (11.38)

60.02 (11.30)

< 0.001*

 Age at last visit (in years)

75.76 (7.37)

72.30 (7.87)

< 0.001*

81.68 (5.83)

72.21 (7.81)

< 0.001*

 Sex (female)

3,718 (51%)

221,290 (54%)

< 0.001*

4,060 (61%)

220,948 (54%)

< 0.001*

 EHR record length (in years)

14.87 (10.72)

12.20 (9.84)

< 0.001*

15.93 (10.89)

12.19 (9.83)

< 0.001*

 Deceased (Yes)

1,336 (18%)

18,391 (4.5%)

< 0.001*

1,601 (24%)

18,126 (4.4%)

< 0.001*

Health conditions

 Hypertension (Yes)

5,031 (68%)

143,043 (35%)

< 0.001*

4,592 (68%)

143,482 (35%)

< 0.001*

 Diabetes (Yes)

1,624 (22%)

43,392 (11%)

< 0.001*

1,323 (20%)

43,693 (11%)

< 0.001*

 Stroke (Yes)

345 (4.7%)

2,495 (0.6%)

< 0.001*

572 (8.5%)

2,268 (0.6%)

< 0.001*

 Hyperlipidemia (Yes)

4,128 (56%)

122,184 (30%)

< 0.001*

3,864 (58%)

122,448 (30%)

< 0.001*

  1. EHR electronic health record.
  2. [a] Summary statistics are displayed as n (%) for categorical variables, and mean (SD) for continuous variables. P-values were calculated with Pearson’s Chi-squared test or Wilcoxon rank sum test as appropriate.
  3. *Statistical significance at P-value < 0.05 level.