Additional file 1: Table S1. of Independent associations between arterial bicarbonate, apnea severity and hypertension in obstructive sleep apnea EskandariDavoud ZouDing GroteLudger SchneiderHartmut PenzelThomas HednerJan 2017 Normotensive patient characteristics across StHCO3- quartiles (n = 388). Table S2. Association between LogStHCO3 - and systolic blood pressure in a generalized linear model. Table S3. Association between LogStHCO3 - and diastolic blood pressure in a generalized linear model. Figure S1. Relationship between pCO2 and stHCO3 - (Spearman correlation). Figure S2. Relationship between apnea hypopnea index and stHCO3 - (Spearman correlation). (DOCX 107 kb)