Table 4: Comparison of the effect of antiphospholipid antibody positivity and negativity on haematological variables.

Subjects

Controls

PCV (%)

aPL POS

aPL NEG

t-test

p-value

aPL POS

aPL NEG

t-test

p-value

Mean ± SD

32.7 ± 4.1

33.7 ± 3.6

0.84

0.41

Mean ± SD

37.4 ± 3.3

37.5 ± 3.5

0.04

0.97

WBC (×109/L)

5,845 ± 2,541

5,635 ± 3,026

-0.23

0.82

4,171 ± 713

5,099 ± 3,475

0.69

0.49

PLT (× 109/L)

280,333 ± 85,970

265,913 ± 107423

-0.44

0.66

235,000 ± 119,983

216,880 ± 73,442

-0.56

0.58

CD4 (/µl)

812 ± 557

885 ± 542

0.43

0.67

1,248 ± 284

1,168 ± 333

-0.61

0.55

APTT (secs)

46.6 ± 3.9

38.4 ± 3.2

-8.45

0.0000

45.6 ± 5.3

39.3 ± 3.2

-4.48

0.0000

aPL: Antiphospholipid antibodies; POS: Positive; NEG: Negative; PCV: Packed cell volume; WBC: White cell count; PLT: Platelet; CD4: Cluster of differentiation 4; APTT: Activated partial thromboplastin time.