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Table 3 Sensitivity to clinical change at 4 months since baseline

From: Assessment of the consequences of caregiving in psychosis: a psychometric comparison of the Zarit Burden Interview (ZBI) and the Involvement Evaluation Questionnaire (IEQ)

  ZBI (n = 85) IEQ (n =86)
Baseline mean score (SD) 32.3 (16.0) 31.1 (16.2)
Endpoint mean score (SD) 27.7 (13.4) 26.6 (14.2)
Mean change endpoint – baseline scores (95% CI) 4.6 (1.9, 7.3)* 4.5 (2.0, 7.0)*
Within-group effect size (95% CI) −0.36 (−0.58, −0.15) −0.39 (−0.60, −0.18)
  1. ZBI Zarit Burden Interview, IEQ Involvement Evaluation Questionnaire, SD standard deviation, CI confidence interval
  2. * P-value < 0.001