Table 1. Baseline Characteristics of the Study Population After Propensity Score Matching.
| Characteristicsa | AD (n = 142 429) | Non-AD (n = 142 429) | SMDb |
|---|---|---|---|
| Age, mean (SD), y | 44.9 (18.3) | 44.1 (18.1) | 0.0440 |
| Sex, No. (%) | |||
| Female | 78 213 (54.91) | 79 636 (55.91) | 0.0201 |
| Male | 64 216 (45.09) | 62 793 (44.09) | 0.0201 |
| Income level in NTD (USD), No. (%) | |||
| Financially dependent | 26 222 (18.41) | 24 764 (17.39) | 0.0266 |
| 15 840 (519.2)-24 999 (819.4) | 68 451 (48.06) | 69 710 (48.94) | 0.0176 |
| 25 000 (819.5)-39 999 (1311.1) | 23 027 (16.17) | 23 215 (16.3) | 0.0035 |
| ≥40 000 (1311.2) | 24 729 (17.36) | 24 740 (17.37) | 0.0003 |
| Comorbidities, No. (%) | |||
| Hypertension | 24 400 (17.13) | 22 816 (16.02) | 0.0299 |
| Atrial fibrillation | 880 (0.62) | 708 (0.50) | 0.0161 |
| Stroke | 4873 (3.42) | 4184 (2.94) | 0.0274 |
| Heart failure | 1641 (1.15) | 1321 (0.93) | 0.0217 |
| Coronary artery disease | 7105 (4.99) | 6289 (4.42) | 0.0269 |
| Chronic obstructive pulmonary disease | 5388 (3.78) | 4253 (2.99) | 0.0437 |
| Chronic kidney disease | 2281 (1.60) | 1876 (1.32) | 0.0233 |
| Cirrhosis | 825 (0.58) | 685 (0.48) | 0.0138 |
| Hyperlipidemia | 13 473 (9.46) | 12 289 (8.63) | 0.0289 |
| Fracture of lower limbs | 1476 (1.04) | 1264 (0.89) | 0.0153 |
| Gout | 4418 (3.10) | 3875 (2.72) | 0.0226 |
| Cancer | 3678 (2.58) | 3307 (2.32) | 0.0168 |
| Pregnancy | 1557 (1.09) | 1580 (1.11) | 0.0019 |
| Thyroid dysfunction | 1871 (1.31) | 1569 (1.10) | 0.0192 |
| Allergic conjunctivitis | 2221 (1.56) | 2191 (1.54) | 0.0016 |
| Allergic rhinitis | 5086 (3.57) | 4794 (3.37) | 0.0109 |
| Asthma | 3731 (2.62) | 2718 (1.91) | 0.0477 |
| Food allergy | 426 (0.30) | 258 (0.18) | 0.0245 |
| Urticaria | 3499 (2.46) | 3400 (2.39) | 0.0046 |
| Autoimmune disease | 2700 (1.90) | 1501 (1.05) | 0.0706 |
| Bullous pemphigoid | 61 (0.04) | 26 (0.02) | 0.0115 |
| Pemphigus | 24 (0.02) | 11 (0.01) | 0.0082 |
| Psoriasis | 355 (0.25) | 318 (0.22) | 0.0062 |
| Baseline medication use, No. (%) | |||
| Hormone therapies | 1800 (1.26) | 1481 (1.04) | 0.0206 |
| Statins | 9552 (6.71) | 8697 (6.11) | 0.0245 |
| Antiplatelets | 11 108 (7.80) | 9851 (6.92) | 0.0337 |
Abbreviations: AD, atopic dermatitis; NTD, New Taiwan Dollar; SMD, standardized mean difference.
a
All listed covariates were used to calculate the propensity score.
b
A standardized mean difference of less than 0.1 indicated a negligible difference.