Inter-rater reliability of the Pennsylvania independent monitoring for quality program's essential data elements scale.

The authors tested how well two interviewers agree when they use the IM4Q Essential Data Elements scale.

They checked 74 survey items that ask adults with intellectual disability about life quality, services, and needs.

Different raters listened to the same interviews and scored each item to see if they matched.

Raters agreed on 73 of the 74 items more than 85 percent of the time.

That level of match shows the survey gives steady, trustworthy data no matter who scores it.

Capio et al. (2013) found the same high agreement between mothers and fathers filling out the Social Responsiveness Scale.

Both studies show one careful rater can give you a solid picture, saving time in busy clinics.

Xu et al. (2022) also worked to prove an IDD tool, but they looked at validity, not reliability.

Together the papers tell us: check both reliability and validity before you trust an assessment.

You can use the IM4Q survey with confidence when you need state or funder reports.

One trained staff member can score interviews, so you do not need double staff hours.

Strong reliability means data trends over time are real change, not scorer drift.