Table 1 Study population characteristics: psoriasis and obesity
Study | Study setting | Study design | Total number of patients | Mean age | ||
|---|---|---|---|---|---|---|
Control | Psoriasis | Control | Psoriasis | |||
aNaldi et al.17 | Italy; outpatient (dermatology departments) | Retrospective case–control | 690 | 560 | Median age of 36 | Median age of 38 |
aHerron et al.14 | USA; outpatient (dermatology clinics) | Prospective cross-sectional | 4080 | 557 | 45.7 | 49.8 |
aNeimann et al.18 | UK; outpatient (GPRD) | Prospective case–control | Mild Ps: 465 252 Severe Ps: 14 065 Combined: 479 317 | Mild Ps: 127 706 Severe Ps: 3 854 Combined: 131 560 | Mild Ps:45.7 Severe Ps: 46.3 | Mild Ps: 46.4 Severe Ps: 49.8 |
Cohen et al.11 | Israel; outpatient (CHS database) | Retrospective case–control | 6643 | 340 | 47 | 47.7 |
aKaye et al.15 | UK; outpatient (GPRD) | Prospective nested case–control: incidence of obesity | 219 784 | 44 164 | Not reported | Not reported |
Cohen et al.12 | Israel; outpatient (CHS database) | Retrospective case–control | 48 677 | 16 850 | 51 | 42.7 |
Xiao et al.23 | China; outpatient (medical records) | Retrospective cross-sectional | 1521 | 3092 | 43.6 | Mild Ps: 43.6 Severe Ps: 46.3 |
aDriessen et al.13 | Netherlands; outpatient (clinic database) | Retrospective cross-sectional | 396 | 107 | 51.2 | 48.5 |
Takahashi et al.21 | Japan; outpatient (dermatology clinic) | Retrospective case–control | 154 | 151 | 57.2 | 53.1 |
aSchmitt et al.19 | Germany; outpatient (GKV-database Saxony) | Retrospective case–control | 3147 | 3147 | 57.1 | 57.1 |
aAugustin et al.10 | Germany; outpatient (health insurance database) | Retrospective cross-sectional | 1 310 090 | 33 981 | Not reported | Not reported |
aAl-Mutairi et al.9 | Kuwait; outpatient (medical records) | Retrospective case–control | 1835 | 1835 | 52.7 | 52.3 |
aWarnecke et al.22 | Germany; inpatients and outpatients (dermatology department) | Retrospective case–control | 100 | 100 | 51.9 | 51.8 |
aZhang et al.24 | China; outpatient (dermatology clinic) | Retrospective cross-sectional | 1166 | 4452 | 36.7 | 36.5 |
aShapiro et al.20 | Israel; inpatient (dermatology department) | Retrospective case–control | 1079 | 1079 | 68.7 | 68.6 |
Langan et al.16 | UK; outpatient (THIN database) | Retrospective case–control | 40 650 | 4065 | Not reported | Not reported |
