Table 2.

Posttreatment gametocyte circulation by primaquine group among patients from the National Antimalarial Drug Resistance Monitoring System, India, 2009 to 2010^a

Time unit	Arm	No. of gametocytes	Total	IR	IRR	95% CI	IRD	95% CI
Days	PQ	473	17,052	2.77	0.43	0.39, 0.47	−0.037	−0.033 to −0.041
	No PQ	1,620	25,019	6.48
Weeks	PQ	92	2,436	3.78	0.47	0.37, 0.60	−0.042	−0.030 to −0.054
	No PQ	285	3,574	7.97

^aAbbreviations: PQ, primaquine; IR, incidence rate per 100-person-time; IRR, incidence rate ratio; IRD, incidence rate difference; CI, confidence interval.