An application of restricted mean survival time in a competing risks setting: comparing time to ART initiation by injection drug use

Table 2 Standardized^a 5-year restricted mean time to all-cause mortality by history of injection drug use

	Expected time (years) to All-Cause Mortality
	PWID		Persons who did not inject drugs		Difference
	RMST	95% CI^b	RMST	95% CI	RMST	95% CI
All years	4.51	4.42, 4.57	4.70	4.65, 4.74	−0.19	−0.29, −0.09
1996–2001	4.47	4.36, 4.58	4.62	4.54, 4.68	−0.15	−0.27, − 0.02
2002–2007	4.45	4.18, 4.71	4.80	4.56, 5.00	−0.35	−0.64, − 0.05
2008–2014	4.58	4.36, 4.87	4.88	4.80, 4.97	−0.30	−0.53, 0.01

^aEstimates are standardized to the distribution of sex, race, AIDS diagnosis, prior ART mono- or dual-therapy, age, CD4 cell count, and log₁₀ HIV viral load in the total sample at clinic enrollment using inverse probability of exposure weights
^b95% CI was based upon the 2.5th and 97.5th percentiles of 10,000 non-parametric bootstrap resamples

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