Table 3.

Estimated differences in multiply-spliced HIV RNA per million resting CD4 cells, from a study comparing 26 women with 26 men, all with effectively treated HIV [31]

Method	Estimated male : female ratio	95% Confidence interval	P-value
A. 0 copies reset to 1, unpaired t-test	2.38	1.07–5.27	0.034
B. Add 1 to copies, unpaired t-test	2.11	0.98–4.53	0.055
C. 0 copies treated as left-censored	2.73	0.87–8.56	0.084
D. Negative binomial regression	6.17	1.95–19.6	0.002