Table 2

General characteristics of the ischemic stroke case-control study sample

Characteristic

Controls

Cases

P-value*

N

499

534

Sex (n/N, %male)

230/499 (46.1)

336/534 (62.9)

< 10^-4

Age-at-examination (mean ± SD, years)

62.9 ± 6.9

52.1 ± 9.4

< 10^-4

Age-at-onset (mean ± SD, years)

-

51.4 ± 9.5

-

Risk factors (n/N, %)

Hypertension (> 140–85 mmHg)

183/482 (38.0)

270/478 (56.5)

< 10^-4

Hypercholestrolemia (> 200 mg/dL)

309/489 (63.2)

310/496 (62.5)

0.654

Hypertriglycemia (> 200 mg/dL)

64/411 (15.6)

38/215 (17.7)

0.508

Diabetes

54/470 (11.5)

88/509 (17.3)

0.007

Ever smoking

127/481 (26.4)

259/526 (49.2)

< 10^-4

Ever drinking

202/474 (42.6)

305/527 (57.9)

< 10^-4

*P-value of an unpaired Student's t test or a chi-square test for quantitative and qualitative data, respectively. SD: standard deviation.

Rosa et al. BMC Medical Genetics 2008 9:57   doi:10.1186/1471-2350-9-57