Table 4. Combined genotype frequency of IL-1B T-31C and IL-1R1 C-116T on chromosome 2q.

IL-1B	IL-1R1	Observed		Expected
C-31T	C-116T	N=239	%	N=239
C/C	C/C	17	7.1	16.3
C/C	C/T	22	9.2	20.0
C/C	T/T	3	1.2	5.6
C/T	C/C	59	24.6	51.7
C/T	C/T	56	23.4	63.4
C/T	T/T	18	7.5	17.8
T/T	C/C	17	7.1	24.9
T/T	C/T	36	15.0	30.5
T/T	T/T	11	4.6	8.5

* χ²=7.51, d.f.=4, p=0.111