. 2018 Oct 20;8(4):593–604. doi: 10.1007/s13555-018-0266-x

Table 3.

Results of a predictive multivariable logistic regression model for presence of psoriatic arthritis that includes only factors predating the onset of psoriatic arthritis (model 1)

Variable	Odds ratio (95% CI)^a	p value
Intercept	0.55 [0.32–0.92]	0.024*
Age of psoriasis onset	0.99 [0.98–1.00]	0.065^c
Gender^b	1.24 [0.83–1.84]	0.295
HLA-C*06:02 positivity	0.45 [0.29–0.70]	0.0005***
HLA-B*27 positivity	0.96 [0.43–1.99]	0.908
Family history of psoriasis	1.24 [0.83–1.87]	0.291

*, **, ***Results are statistically significant at *p < 0.05, **p value < 0.01, or highly significant at ***p < 0.001

^aORs for continuous variables (age, age of onset, BMI) are per unit increase

^bOdds ratio for females relative to the reference group of males

^cIndicates a trend towards statistical significance (p < 0.1)