Table 3.

Incidence Rate Ratios of demographic variables for overall FEP risk.

Variable	IRR (95% CI)	z-value
Sex
Females	1
Males	1.56 (1.46–1.66)∗∗∗	13.32
Age band
18–19	1
20–24	0.82 (0.73–0.93)∗∗	−3.14
25–29	0.43 (0.37–0.49)∗∗∗	−12.7
30–34	0.34 (0.29–0.39)∗∗∗	−15.4
35–39	0.3 (0.26–0.35)∗∗∗	−16.1
40–44	0.23 (0.2–0.27)∗∗∗	−17.8
45–49	0.23 (0.2–0.28)∗∗∗	−17.3
50–54	0.2 (0.17–0.23)∗∗∗	−18.8
55–59	0.17 (0.14–0.2)∗∗∗	−19.1
60–64	0.12 (0.09–0.15)∗∗∗	−17.7
Ethnicity
White British	1
White other	1.31 (1.17–1.47)∗∗∗	4.62
Asian	1.36 (1.2–1.54)∗∗∗	4.8
Black	3.31 (3.04–3.6) ∗∗∗	27.37
Mixed	1.32 (1.13–1.54)∗∗∗	3.56
Other	2.31 (2.01–2.66)∗∗∗	11.8

Significance: (P < 0.05), ∗∗ (P < 0.01), and ∗∗∗ (P < 0.001).

Note: IRR, Incidence Rate Ratio; CI, Confidence Interval.