Table 1.
Linear regression analyses of risk factors associated with incidence, prevalence, and years lost to disability (YLD) rates of psoriasis.
| Risk factors and Y value | Association | Countries, n | R 2 | P value | |||||||
| Overweight prevalence (BMI ≥25, age-standardized estimate; %) | 182 |
|
|
||||||||
|
|
Incidence of psoriasis | Positive |
|
0.26 | <.001 | ||||||
|
|
Prevalence of psoriasis | Positive |
|
0.22 | <.001 | ||||||
|
|
YLDs of psoriasis | Positive |
|
0.19 | <.001 | ||||||
| Mean total cholesterol (age-standardized estimate) | 184 |
|
|
||||||||
|
|
Incidence of psoriasis | Positive |
|
0.31 | <.001 | ||||||
|
|
Prevalence of psoriasis | Positive |
|
0.26 | <.001 | ||||||
|
|
YLDs of psoriasis | Positive |
|
0.23 | <.001 | ||||||
| Mortality rate attributed to household and ambient air pollution per 100,000 population (age-standardized) | 182 |
|
|
||||||||
|
|
Incidence of psoriasis | Negative |
|
0.40 | <.001 | ||||||
|
|
Prevalence of psoriasis | Negative |
|
0.35 | <.001 | ||||||
|
|
YLDs of psoriasis | Negative |
|
N/Aa | <.001 | ||||||
| Mental hospital admissions per 100,000 population | 98 |
|
|
||||||||
|
|
Incidence of psoriasis | Positive |
|
0.25 | <.001 | ||||||
|
|
Prevalence of psoriasis | Positive |
|
0.21 | <.001 | ||||||
|
|
YLDs of psoriasis | Positive |
|
0.17 | <.001 | ||||||
| Medical doctors per 100,000 population | 184 |
|
|
||||||||
|
|
Incidence of psoriasis | Positive |
|
0.50 | <.001 | ||||||
|
|
Prevalence of psoriasis | Positive |
|
0.44 | <.001 | ||||||
|
|
YLDs of psoriasis | Positive |
|
0.41 | <.001 | ||||||
| Psychiatrists working in mental health sector (per 100,000 population) | 102 |
|
|
||||||||
|
|
Incidence of psoriasis | Positive |
|
0.58 | <.001 | ||||||
|
|
Prevalence of psoriasis | Positive |
|
0.56 | <.001 | ||||||
|
|
YLDs of psoriasis | Positive |
|
0.53 | <.001 | ||||||
aN/A: not applicable.