"You can’t add a ci option here, but should add it as an option of the mi predictnl command, e.g., ci(lci uci)"
I hadn't realized that ci was an option of predictnl. The entire command also requires a force option, so the correct version would be:
Code:
mi predictnl survimp2 = predict(survival at(agegrp 2) timevar(_t)) using mi_stpm2, ci(surv_ll surv_ul) force
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