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Table 2 Characteristics of suspected and laboratory-confirmed cases of COVID-19 (total n = 4157). All continuous variables presented in median (interquartile range)

From: Prehospital characteristics of COVID-19 patients in Helsinki – experience of the first wave of the pandemic

Variable All patients Suspected Covid-19 Confirmed Covid-19 P value
Age (years) 72.42 (52.08–82.5) 73.25 (53.83–83.17) 62 (44.83–78.19) < 0.001
Sex, male (%) 2048 (49.4%) 1789 (49.5%) 259 (48.4%) 0.671
Native language other than Finnish or Swedish (%) 391 (9.8%) 259 (7.4%) 132 (26.6%) < 0.001
Initial respiratory rate (/min) 20 (16–25) 20 (16–25) 19 (16–24) 0.181
Last respiratory rate (/min) 19 (16–24) 19 (16–24) 18 (16–24) 0.175
Initial blood oxygen saturation (%) 95 (92–97) 95 (92–97) 95 (92–97) 0.444
Last blood oxygen saturation (%) 96 (94–98) 96 (94–98) 95 (93–97) 0.086
Heart rate (/min) 94 (79–110) 94 (79–110) 91 (79–105) < 0.01
Systolic blood pressure (mmHg) 138 (121–156) 139 (121–158) 133 (120–149) < 0.001
Temperature (°C) 37.5 (36.9–38.4) 37.5 (36.8–38.3) 37.8 (37.1–38.6) < 0.001
Blood glucose (mmol/l) 7 (6–8.7) 7.1 (6–8.7) 6.7 (5.8–8.7) 0.129
Urgency of dispatch     < 0.001
A 291 (7.0%) 273 (7.5%) 18 (3.4%)  
B 891 (21.4%) 797 (22.0%) 94 (17.5%)  
C 1250 (30.1%) 1088 (30.0%) 162 (30.2%)  
D 1725 (41.5%) 1463 (40.4%) 262 (48.9%)  
On-scene time (min) 25 (19–34) 25 (19–35) 23 (17–30) < 0.001
Duration of the mission (min) 100 (78–130) 100 (79–128) 99 (72–135.25) 0.219
Transport rate (%) 3498 (84.1%) 3130 (86.4%) 368 (68.7%) < 0.001