Univariable and multivariable analysis: Predictors of reported TxA ≥6%.

1 Total sample size is restricted to those who provided a TxA estimate (602); therefore individual samples are smaller than in demographics section (Supplement A3, total sample n = 667). 2 p = value obtained through likelihood estimates. 3 HIC = High-income countries, UMIC = upper-middle-income countries, LMIC = lower-middle-income countries, LIC = low-income countries. 4 Center volume was evaluated as ordinal, source of funding as out-of-pocket vs. others, and economic hardship as continuous variable in multivariable analysis in order to preserve power. Univariable and multivariable analysis: Predictors of reported TxA ≥6%.