Table 1.
Demographics and symptoms of respondents with atopic dermatitis (AD), stratified by disease severity.
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Mild (n=37) | Moderate (n=48) | Severe (n=55) | All (N=140) | P value (between AD severity group comparison)a | ||||||||
| Age (years; N=140), n (%)b | |||||||||||||
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18-29 | 5 (14) | 21 (44) | 18 (33) | 44 (32) | .01 | |||||||
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30-39 | 9 (24) | 8 (17) | 17 (32) | 34 (24) | .24 | |||||||
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40-49 | 12 (32) | 10 (21) | 11 (20) | 33 (24) | .33 | |||||||
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≥50 | 11 (30) | 9 (19) | 9 (16) | 29 (21) | .28 | |||||||
| Female (n=138), n (%)b | 30 (83) | 44 (92) | 51 (94) | 125 (91) | .20 | ||||||||
| Educational level (n=139), n (%)b | .17 | ||||||||||||
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Basic compulsory educationc | 0 (0) | 1 (2) | 7 (13) | 8 (6) |
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Youth educationd | 13 (35) | 20 (42) | 24 (44) | 57 (41) |
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Higher educatione,f | 23 (60) | 25 (52) | 22 (40) | 69 (50) |
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Education not completed | 1 (3) | 0 (0) | 0 (0) | 1 (1) |
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Other | 1 (3) | 2 (4) | 1 (2) | 4 (3) |
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| Age at diagnosis (years; n=139), n (%) | |||||||||||||
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0-2 | 14 (38) | 19 (40) | 31 (56) | 64 (46) | .11 | |||||||
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3-12 | 14 (38) | 10 (21) | 8 (15) | 32 (23) | .04 | |||||||
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Older than 12 yearsg | .33 | |||||||||||
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13-19 | 3 (8) | 4 (9) | 6 (11) | 13 (9) |
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20-40 | 4 (11) | 9 (19) | 7 (13) | 20 (14) |
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>40 | 2 (5) | 5 (11) | 2 (4) | 9 (7) |
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Do not know | 0 (0) | 0 (0) | 1 (2) | 1 (1) | N/Ah | |||||||
| Comorbidities (N=140), n (%) | |||||||||||||
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Asthma | 18 (49) | 16 (33) | 24 (44) | 58 (41) | .33 | |||||||
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Allergic rhinitis | 24 (65) | 27 (56) | 34 (62) | 85 (61) | .71 | |||||||
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Food allergies | 12 (32) | 15 (31) | 24 (44) | 51 (36) | .36 | |||||||
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No asthma nor allergy | 15 (41) | 21 (44) | 24 (44) | 60 (43) | .67 | |||||||
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Other types of allergies | 5 (14) | 9 (19) | 7 (13) | 21 (15) | .95 | |||||||
| Bothersome symptoms (N=140), n (%) | |||||||||||||
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Itch | 29 (78) | 47 (98) | 55 (100) | 131 (94) | <.001 | |||||||
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Dry skin | 32 (87) | 45 (94) | 54 (98) | 131 (94) | .08 | |||||||
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Red rash | 27 (73) | 36 (75) | 52 (95) | 115 (82) | .008 | |||||||
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Exudation | 7 (19) | 15 (31) | 28 (51) | 50 (36) | .005 | |||||||
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Swelling | 9 (24) | 15 (31) | 26 (47) | 50 (36) | .06 | |||||||
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Poor night’s sleep | 6 (16) | 15 (31) | 39 (71) | 60 (43) | <.001 | |||||||
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Skin pain | 16 (43) | 22 (46) | 41 (75) | 79 (56) | .002 | |||||||
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Other | 0 (0) | 6 (13) | 5 (9) | 11 (8) | .10 | |||||||
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No symptoms | 2 (5) | 0 (0) | 0 (0) | 2 (1) | .06 | |||||||
aPearson chi-square test for AD severity group comparison. Significance level 5%.
bChi-square goodness-of-fit test for responders’ representativeness with the Danish general population—age: χ2 goodness of fit=47.8, df=3, P<.001; gender: goodness of fit χ21=87.9, P<.001; education: goodness of fit χ21=13.8, P<.001).
cBasic compulsory education includes 9th and 10th grade.
dYouth education includes high school and vocational school.
eHigher education includes bachelor’s, master’s, or PhD programs.
fPearson chi-square test for AD severity group comparison split between higher education or not.
gPearson chi-square test performed for the AD severity group whose age at diagnosis was older than 12 years.
hN/A: not applicable.