Table 2

Internal reliability scores for PC PMOS domains

DomainPre CFAPost CFA
Items, nCronbach alpha*Items, nAverage inter-item correlation
External policy20.40No change
Information flow50.3640.47
Organisation care planning50.1030.25
Patient-related factors70.6620.71
Physical environment20.43No change
Referrals20.46No change
Task performance70.6830.38
Team factors20.18Domain deleted
  • Data were collected in 2017 in nine general practices within Greater Manchester, UK. A total of 490 patients were included in the study.

  • *Average inter-item calculated for scales with fewer than seven items.

  • CFA, confirmatory factor analysis; PC MOS, Primary Care Patient Measure of Safety.