Introduction: Social factors are very important to good outcome in chronic disease. Methods: Cross-sectional study evaluated clinical measures among hemiplegic cerebral palsy (HCP) patients treated with BoNT-A. Data were from charts and by actual evaluation. All patients had encephalic magnetic resonance image (EMRI). Statistical analyses were significant at p<0.05.

Results: Sixty-six patients with mean age of 135±55.79 months (57 to 268) were evaluated. Mean per capita income was R$ 567,56±717.72, with 71% below the mean. Complete and incomplete basic levels predominate in parent’s education. Twenty five families received full disability pension (FDP), while in 15 was the unique income. Team home orientations were not following in 17 (low adherence). Patients from FDP families and low adherence had current higher spasticity, smaller tone reduction during follow-up and worse current PRS. Children from families without FDP had better cognition and total WeeFIM scores. Those that frequent regular school had better self-care, communication, cognition and total WeeFIM. Children from mothers with higher education level had better communication WeeFIM. Most of families had two or three offspring. Third or more offspring children had less spasticity reduction. Children which EMRI showed Periventricular Atrophy (PA) and fathers with college had current lower upper extremity spasticity, better UPRS and distal upper extremity muscle strength than which fathers with basic education. Children with PA and mothers with college had better lower extremity muscle strength.

Conclusion/Discussion: Children from low income families, especially those that occupied the third or more place in the offspring, had worst response to BoNT-A treatment.