Table 1 Operational data of drowning patients treated by the Danish Air Ambulance from 2016–2021
|  | Non-fatal (n = 27) | Fatal (n = 55) | Total (n = 82) | p-value |
|---|---|---|---|---|
Total mission time (min), median [IQR] | 83 [54–101] | 78 [55–112] | 82 [55–107] | 0.64 |
Response time (min), median [IQR] | 20 [12–26] | 21 [15–27] | 21 [15–27] | 0.42 |
On-scene time (min), median [IQR] | 19 [16–29] | 28 [21–32] | 26 [19–30] | 0.01* |
Danish Air Ambulance base, n (%) | 0.26 | |||
Saltum | 3 (11) | 6 (11) | 9 (11) | Â |
Billund | 9 (33) | 8 (15) | 17 (21) | Â |
Skive | 8 (30) | 21 (38) | 29 (35) | Â |
Ringsted | 7 (26) | 20 (36) | 27 (33) | Â |
Population density at site, n (%) | 0.77 | |||
Thinly populated area | 18 (67) | 36 (65) | 54 (66) | Â |
Intermediate density area | 9 (33) | 17 (31) | 26 (32) | Â |
Densely populated area | 0 (0) | 1 (2) | 1 (1) | Â |
Missing | 0 (0) | 1 (2) | 1 (1) | Â |
Season, n (%) | 0.16 | |||
Winter (Dec.–Feb) | 2 (7) | 7 (13) | 9 (11) |  |
Spring (Mar.–May) | 3 (11) | 12 (22) | 15 (18) |  |
Summer (Jun.–Aug.) | 19 (70) | 24 (44) | 43 (52) |  |
Autumn (Sep.–Nov.) | 3 (11) | 12 (22) | 15 (18) |  |
Weekday, n (%) | 0.45 | |||
Monday–Friday | 22 (81) | 39 (71) | 61 (74) |  |
Saturday–Sunday | 5 (19) | 16 (29) | 21 (26) |  |
Location, n (%) | 0.05 | |||
Bathtub | 3 (11) | 1 (2) | 4 (5) | Â |
Swimming pool | 5 (19) | 4 (7) | 9 (11) | Â |
Harbour | 5 (19) | 15 (27) | 20 (24) | Â |
Coastline | 6 (22) | 26 (47) | 32 (39) | Â |
Lake | 3 (11) | 4 (7) | 7 (9) | Â |
Missing | 5 (19) | 5 (9) | 10 (12) | Â |
Liquid, n (%) |  < 0.01*,a | |||
Freshwater | 6 (22) | 8 (15) | 14 (17) | Â |
Saltwater | 10 (37) | 41 (75) | 51 (62) | Â |
Chlorinated water | 5 (19) | 2 (4) | 7 (9) | Â |
Other | 1 (4) | 0 (0) | 1 (1) | Â |
Missing | 5 (19) | 4 (7) | 9 (11) | Â |
Activity, n (%) | 0.84 | |||
Swimming/bathing | 13 (48) | 20 (36) | 33 (40) | Â |
Boat activity | 1 (4) | 1 (2) | 2 (2) | Â |
Recreational fishing | 0 (0) | 1 (2) | 1 (1) | Â |
Traffic | 0 (0) | 2 (4) | 2 (2) | Â |
Harbour activity | 3 (11) | 6 (11) | 9 (11) | Â |
Water sports | 1 (4) | 2 (4) | 3 (4) | Â |
Missing | 9 (33) | 23 (42) | 32 (39) | Â |