Table 5.

Clinical characteristics of the Beijing and non-Beijing family strains

Characteristics	Total	Beijing family	Non-Beijing family	OR (95 % CI)	p-value
Age, years
< 30	424	389	35	-	0.434
30–60	404	362	42
> 60	189	168	21
Gender
Male	705	632	73	1	0.204
Female	312	288	24	0.722 (0.446–1.168)
Treatment history
New case	753	685	68	1	0.433
Retreatment	221	197	24	1.277 (0.751–2.007)