Time of admission (year) |
2018 |
2019 |
2020 |
2021 |
Total 2018-2021 |
Peak
2021 ¶ |
Number of admissions |
32 |
41 |
36 |
59 |
168 |
38 |
Girls |
8 (25%) |
16 (39%) |
14 (38.9%) |
27 (45.8%) |
65 (38.7%) |
18 (47.4%) |
Age in years, mean ± SD |
7.0 ± 3.6 |
7.1 ± 3.7 |
7.9 ± 3.6 |
7.4 ± 3.6 |
7.4 ± 3.6 |
7.0 ± 3.5 |
Divorced parents |
12 (37.5%) |
12 (29.3%) |
8 (22.2%) |
17 (28.8%) |
49 (29.2%) |
12 (31.6%) |
Living with a single parent |
8 (25%) |
8 (19.5%) |
1 (2.8%) |
8
(13.6%) |
25 (14.9%) |
4 (10.5%) |
Environmental characteristics |
Environmental
characteristics |
Environmental characteristics |
Environmental characteristics |
Environmental
characteristics |
Environmental characteristics |
Environmental characteristics |
Tobacco smoke exposure (TSE) |
12 (37.5%) |
14 (34.1%) |
12 (33.3%) |
15 (25.%) |
53 (31.5%) |
8 (21.1%) |
Ambient PM2.5 concentration (micrograms per cubic meter of air), median
(25th-75th percentiles) |
10.4 (6.5-17.5) |
7.4 (4.4-12.63) |
7.6
(4.7-11.7) |
9.5 (6.4-13.8) |
8.6 (5.5-13.9) |
9.9
(6.9-14) |
Pollen (grains per cubic meter of air), median (25th-75th percentiles) |
7 (1-28) |
14.5 (2-60.7) |
7 (1-22) |
4 (1-25.7) |
7 (1-30.5) |
1
(1-8.5) |
Clinical characteristics |
Clinical characteristics |
Clinical characteristics |
Clinical characteristics |
Clinical characteristics |
Clinical characteristics |
Clinical characteristics |
Clinical diagnosis of viral infection† |
28 (87.5%) |
22 (53.7%) |
25
(69.4%) |
43 (72.9%) |
118 (70.2%) |
29 (76.3%) |
Conducting virology laboratory tests‡ |
12 (37.5%) |
18 (43.9%) |
30
(83.3%) |
41 (62.5%) |
101 (60.1%) |
24 (63.2%) |
Allergy history |
18 (56.3%) |
19 (46.3%) |
19 (52.8%) |
31 (52.5%) |
90 (53.6%) |
18 (47.4%) |
Previously diagnosed with asthma |
19 (59.4%) |
21 (51.2%) |
15
(41.7%) |
21 (35.6%) |
76 (45.2%) |
13 (34.2%) |
Days between symptom onset and admission, median
(25th-75th percentiles) |
3 (1-7) |
2 (1-3.375) |
2 (1-4) |
3 (2-6.25) |
2 (1-5) |
2.5 (2-5) |
Duration of hospitalization in days, median
(25th-75th percentiles) |
2 (2-3) |
2 (1-3.5) |
2 (2-3) |
2 (2-3) |
2 (1-3) |
2 (2-3.25) |
Severe acute asthma triggers*5 |
Severe acute asthma triggers*5 |
Severe acute asthma triggers*5 |
Severe acute asthma triggers*5 |
Severe acute asthma triggers*5 |
Severe acute asthma triggers*5 |
Severe acute asthma triggers*5 |
URTI |
27 (84.4%) |
27 (65.9%) |
30 (83.3%) |
31 (52.5%) |
115
(68.5%) |
19 (50%) |
Pneumonia |
0 (0%) |
7 (17.1%) |
1 (2.8%) |
10 (16.9%) |
18 (10.7%) |
8 (21.1%) |
Allergens (e.g. pollen, dust mite, chemicals) |
6 (18.8%) |
5 (12.2%) |
9 (25%) |
8 (13.6%) |
28 (16.7%) |
3 (7.9%) |
Dogs/cats |
0 (0%) |
1 (2.4%) |
0 (0%) |
1 (1.7%) |
2 (1.2%) |
0
(0%) |
(Tobacco) smoke |
0 (0%) |
4 (9.8%) |
1 (2.8%) |
0 (0%) |
5 (3%) |
0 (0%) |
Cold and/ or dry air |
0 (0%) |
0 (0%) |
1 (2.8%) |
2 (3.4%) |
3
(1.8%) |
1 (2.6%) |
Physical exercise |
0 (0%) |
1 (2.4%) |
0 (0%) |
2 (3.4%) |
3
(1.8%) |
1 (2.6%) |
Gastroesophageal reflux |
0 (0%) |
0 (0%) |
0 (0%) |
0 (0%) |
0
(0%) |
0 (0%) |
No trigger |
1 (3.1%) |
7 (17.1%) |
2 (5.6%) |
8 (13.6%) |
18
(10.7%) |
7 (18.4%) |
Abbreviations: PM2.5 = fine particulate matter; URTI =
upper respiratory tract infection.
Footnotes:
† As per physician diagnosis.
‡ There were two types of viral test kit used; a simple one (Influenza
A and B, SARS-CoV-2 and RSV) and a complete one (twelve respiratory
viruses)
§ As recorded in admission notes. More than one trigger can be
recorded, resulting in percentages adding to more than 100%
¶ Peak 2021 was the time period from August to November 2021
|
Abbreviations: PM2.5 = fine particulate matter; URTI =
upper respiratory tract infection.
Footnotes:
† As per physician diagnosis.
‡ There were two types of viral test kit used; a simple one (Influenza
A and B, SARS-CoV-2 and RSV) and a complete one (twelve respiratory
viruses)
§ As recorded in admission notes. More than one trigger can be
recorded, resulting in percentages adding to more than 100%
¶ Peak 2021 was the time period from August to November 2021
|
Abbreviations: PM2.5 = fine particulate matter; URTI =
upper respiratory tract infection.
Footnotes:
† As per physician diagnosis.
‡ There were two types of viral test kit used; a simple one (Influenza
A and B, SARS-CoV-2 and RSV) and a complete one (twelve respiratory
viruses)
§ As recorded in admission notes. More than one trigger can be
recorded, resulting in percentages adding to more than 100%
¶ Peak 2021 was the time period from August to November 2021
|
Abbreviations: PM2.5 = fine particulate matter; URTI =
upper respiratory tract infection.
Footnotes:
† As per physician diagnosis.
‡ There were two types of viral test kit used; a simple one (Influenza
A and B, SARS-CoV-2 and RSV) and a complete one (twelve respiratory
viruses)
§ As recorded in admission notes. More than one trigger can be
recorded, resulting in percentages adding to more than 100%
¶ Peak 2021 was the time period from August to November 2021
|
Abbreviations: PM2.5 = fine particulate matter; URTI =
upper respiratory tract infection.
Footnotes:
† As per physician diagnosis.
‡ There were two types of viral test kit used; a simple one (Influenza
A and B, SARS-CoV-2 and RSV) and a complete one (twelve respiratory
viruses)
§ As recorded in admission notes. More than one trigger can be
recorded, resulting in percentages adding to more than 100%
¶ Peak 2021 was the time period from August to November 2021
|
Abbreviations: PM2.5 = fine particulate matter; URTI =
upper respiratory tract infection.
Footnotes:
† As per physician diagnosis.
‡ There were two types of viral test kit used; a simple one (Influenza
A and B, SARS-CoV-2 and RSV) and a complete one (twelve respiratory
viruses)
§ As recorded in admission notes. More than one trigger can be
recorded, resulting in percentages adding to more than 100%
¶ Peak 2021 was the time period from August to November 2021
|
Abbreviations: PM2.5 = fine particulate matter; URTI =
upper respiratory tract infection.
Footnotes:
† As per physician diagnosis.
‡ There were two types of viral test kit used; a simple one (Influenza
A and B, SARS-CoV-2 and RSV) and a complete one (twelve respiratory
viruses)
§ As recorded in admission notes. More than one trigger can be
recorded, resulting in percentages adding to more than 100%
¶ Peak 2021 was the time period from August to November 2021
|