Variable No. Platelet count (×109/L) Statistics
Manual method Automated method
Mean SD Mean SD F p
Sex of patients:
Male 101 226.7 91.4 253.8 117.7 27.1 0.86
Female 89 223.8 99.4 238.2 102.0 14.4 0.92
Age of patients (years):
≤20 84 272.5 115.6 255.4 112.5 47.1 0.77
21-40 50 299.5 111.2 284.5 131.5 15.0 0.93
41-60 40 288.3 132.9 306.3 118.2 18.0 0.92
>60 16 249.7 426.7 255.3 681.6 5.6 0.99
Total 190 225.2 95.4 245.7 109.8 20.5 0.44
p-value<0.05 is statistically significant, SD: Standard Deviation.
Table 1: The mean platelet count by manual versus automated methods according to sex and age of patients.