Table 3.

Multivariate analysis; anti-thrombopoietin (anti-TPO)-positive patients maintain lower platelet counts compared to anti-TPO negative patients (lower mean value −67·16 × 10³/µl) after adjusting for other confounders (R² 0·56).

Variable	Coefficient§	P-value	95% CIs*
Anti-TPO (+ versus–)	− 67·16	0·002	− 110·2 to −24·1
Corticosteroids (high versus low dose)	− 66·40	0·002	− 108·0 to −24·7
IVIG (yes versus no)	− 105·54	0·000	− 155·9 to −55·2
Cyclophosphamide (dose, mg)	− 0·02	0·377	− 0·08 to 0·03
Antiphospholipid antibodies (+ versus–)	75·56	0·000	35·3 to 115·8
Constant	268·18	0·000	183·9 to 352·4

Positive, + negative, –

^§mean platelet difference (× 10³/µl)

^*confidence intervals.