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Table 1 Cronbach’s Alpha and McDonald’s Omega for the SDQ subscales for the parent and teacher version

From: The Strengths and Difficulties Questionnaire: psychometric properties of the parent and teacher version in children aged 4–7

SDQ parent Measurement 1 Measurement 2 Measurement 3
  α ω α ω α ω
Emotional symptoms .63 .79 .67 .82 .66 .81
Conduct problems .48 .70 .46 .67 .55 .77
Hyperactivity .77 .86 .79 .88 .81 .89
Peer problems .51 .73 .54 .75 .63 .81
Prosocial behavior .61 .75 .67 .81 .68 .82
Total difficulties .77 .87 .78 .89 .82 .90
SDQ teacher Measurement 1 Measurement 2 Measurement 3
  α ω α ω α ω
Emotional symptoms .71 .87 .75 .89 .72 .87
Conduct problems .53 .85 .68 .85 .73 .89
Hyperactivity .83 .92 .88 .95 .88 .95
Peer problems .64 .82 .67 .82 .67 .82
Prosocial behavior .81 .89 .82 .90 .81 .90
Total problems .80 .91 .85 .93 .85 .93