Table 2

Variability of QIs (note: the columns ‘minimum mean value’ and ‘maximum mean value’ refer to the lowest and highest mean values from the participating P-EMS bases)

QINo. of responses includedMissing (N)Unit of QIMean (95% CI)Median (IQR)Minimum mean valueMaximum mean value
Able to respond immediately when alarmed559939%89 (86 to 92)90 (84–94)7897
Time to arrival of P-EMS24286minutes27 (24 to 30)26 (23–31)1836
On scene time24277minutes20 (19 to 22)21 (19–22)1426
Time to preferred destination222619minutes63 (59 to 67)63 (58–69)4674
Patients arriving hospital alive28095%91 (89 to 93)92 (88–94)8598
Debriefed responses28095%74 (64 to 83)78 (64–88)2997
Adverse events557227%2 (1 to 3)1 (1–3)17
Complete documentation279816%64 (51 to 76)76 (34–80)2591
Guidelines for actual medical problem280212%60 (48 to 72)64 (45–77)1587
P-EMS involvement in dispatch366929%47 (27 to 66)34 (12–94)798
P-EMS necessary to provide appropriate care28086%39 (35 to 43)39 (34–43)2752
Provision of advanced treatment280410%49 (43 to 55)48 (39–58)3371
Significant logistical contribution279519%43 (32 to 55)51 (24–58)680
Patients enrolled in research projects278826%6 (–1 to 13)0 (1–3)040
Care for relatives280311%94 (92 to 96)94 (93–97)87100
  • P-EMS, physician-staffed emergency medical services; QI, quality indicator.