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Table 2 Cronbach’s α if item deleted and corrected item-total correlation for Persian LSIQ (n = 100)

From: Cultural adaptation and psychometric assessment of the Persian version of the lumbar spine instability questionnaire

LSIQ Scale mean if item deleted Scale variance if item deleted Corrected item-total correlation Cronbach’s α if item deleted
Q1 9.03 9.039 0.468 0.744
Q2 9.02 9.333 0.366* 0.755
Q3 8.70 10.253 0.178* 0.767
Q4 9.12 9.177 0.413 0.750
Q5 8.86 9.354 0.422 0.749
Q6 8.98 9.131 0.447 0.747
Q7 8.85 9.280 0.459 0.746
Q8 8.74 9.952 0.279* 0.761
Q9 8.72 10.082 0.240* 0.764
Q10 9.10 9.000 0.476 0.743
Q11 8.90 9.424 0.371* 0.754
Q12 8.96 9.291 0.395* 0.752
Q13 8.92 9.044 0.505 0.741
Q14 9.14 9.394 0.339* 0.757
Q15 9.36 10.213 0.106* 0.776
  1. *Item-total correlation < 0.4