Figure 4From: Medroxyprogesterone improves nocturnal breathing in postmenopausal women with chronic obstructive pulmonary diseaseChanges of SaO 2 mean during different sleep stages with MPA and after a 3- and a 6-week follow-up. Changes are absolute percentage values. MPA = medroxyprogesterone acetate, SaO2 = arterial oxygen saturation. The error bars of SaO2 mean represent standard deviation. P-values are corrected with Bonferroni method.Back to article page