Table 2. Patient factors associated with rifampin- and isoniazid-resistant isolates^a.

Factor	Rifampin resistance (n=78)	Isoniazid resistance (n=66)
Age	p<0.05b	p>0.05
Known prisoner	RR 1.68,b CI 1.29 to 2.18	RR 1.36, CI 0.97 to 1.89
Known previous treatment	RR 1.71,b CI 1.07 to 2.74	RR=2.04,b CI 1.01 to 4.10

^aRR, risk ratio; CI, confidence interval.
^bStatistically significant.