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. Author manuscript; available in PMC: 2020 Nov 6.
Published in final edited form as: Stat Med. 2020 Jun 24;39(23):3059–3073. doi: 10.1002/sim.8591

TABLE 2.

Twenty-three pre-selected covariates

X(0) : sex; race asian; race black; race white; english language (y/n)
X˜(t) : number of hepatitis C antibody tests in the past year; over the past two years: mean number of HIV tests; HIV counseling; number of tests for gonorrhea; prescription for suboxone; sex-suboxone; chlamydia test diagnosis and treatment; possible at risk woman; possible male sex with male
Z(t) : total number of recorded HIV RNA tests; positive gonorrhea tests; diagnosis of syphilis; diagnosis of nongonococcal urethritis; sex-nongonococcal urethritis; diagnosis of bulimia; sex-diagnosis of bulimia; exposed to a venereal disease; engaged in high risk sexual behaviors