Research Article

White Blood Cell Count in Elderly Is Clinically Useful in Predicting Long-Term Survival

Table 1

Sex-specific baseline characteristics of the study cohort according to survival status. Categorical variables are shown as number (%) and continuous variables as median (interquartile range).

SurvivorsNonsurvivors
Men
( )
Women
( )
Men
( )
Women
( )

Current smoker9 (9)8 (5)18 (17)8 (12)
Known hypertension14 (14)39 (25)41 (38)26 (39)
Known diabetes6 (6)9 (6)9 (8)8 (12)
Prior myocardial infarction9 (9)4 (3)22 (20)6 (9)
Statin medication 1 (1)4 (3)6 (6)3 (4)
WBC count (109/L)6.1 (5.4–6.8)5.6 (4.7–6.7)6.4 (5.5–7.4)5.8 (5.1–7.1)
BMI (kg/m2)25.4 (23.1–26.8)26.2 (23.7–29.3)25.1 (23.7–27.3)25.8 (23.4–28.3)
Plasma glucose (mmol/L)5.8 (5.4–6.4)5.9 (5.4–6.4)5.9 (5.4–6.6)6.0 (5.5–7.2)
Systolic BP (mmHg)160 (144–180)165 (150–190)160 (150–180)165 (150–180)
Diastolic BP (mmHg)83 (75–90)85 (80–90)85 (80–91)85 (75–90)
Total cholesterol (mmol/L)6.0 (5.4–6.8)6.6 (5.8–7.3)5.9 (5.3–6.5)6.5 (5.9–7.0)
LDL-cholesterol (mmol/L)3.8 (3.2–4.7)4.1 (3.4–4.8)3.8 (2.9–4.3)4.2 (3.6–4.8)
HDL-cholesterol (mmol/L)1.4 (1.2–1.7)1.6 (1.4–2.0)1.4 (1.2–1.5)1.5 (1.2–1.9)
Triglycerides (mmol/L)1.4 (1.0–1.8)1.4 (1.1–2.1)1.6 (1.1–2.0)1.5 (1.1–2.0)

Significant difference between survivors and nonsurvivors in men.
Significant difference between survivors and nonsurvivors in women.