Table 5. Factors associated with inadequate dosing of ethambutol, 2007–2010, Taipei.

	Adequate	Too high		Too low
	Number (%)	Relative RR	95% CI	Relative RR	95% CI
Sex
Female	576(64.7%)	1		1
Male	764(39.2%)	1.90s	1,24–2.92	1.79	1.46–2.21
Weight (kg)	56(40.6%)
≤39	699(90.9%)	1		1
40–49	585(30.3%)	0.02	0.01–0.04	0.30	0.15–0.58
≥50	56(40.6%)	0.07	0.04–0.11	7.88	4.25–14.60

Adequate dosage (15–20 mg/kg) as the base for comparison. Too high, >20 mg/kg. Too low, <15 mg/kg. RR, risk ratio. CI, confidence interval.