Net loss, as a percentage of net operating revenues, increased from (2.5)% for the three months ended September 30, 2017 to (8.9)% for the three months ended September 30, 2018.
Net income attributable to noncontrolling interests, as a percentage of net operating revenues, remained consistent at 0.5% for both of the three-month periods ended September 30, 2018 and 2017.
Net loss attributable to Community Health Systems, Inc. was $325 million for the three months ended September 30, 2018, compared to $110 million for the three months ended September 30, 2017.
Nine Months Ended September 30, 2018 Compared to Nine Months Ended September 30, 2017
Net operating revenues decreased by 13.0% to approximately $10.7 billion for the nine months ended September 30, 2018, from approximately $12.3 billion for the nine months ended September 30, 2017. Net operating revenues on a same-store basis from hospitals that were operated throughout both periods increased $265 million or 2.6% during the nine months ended September 30, 2018, as compared to the nine months ended September 30, 2017. The increase in same-store net operating revenues was attributable to improved pricing due to higher acuity, partially offset by a decline in inpatient admissions and adjusted admissions.Non-same-store net operating revenues decreased $1.9 billion during the nine months ended September 30, 2018, in comparison to the prior year period, with the decrease attributable primarily to the divestiture of hospitals during 2017 and 2018. On a consolidated basis, inpatient admissions decreased by 16.5% and adjusted admissions decreased by 16.9% during the nine months ended September 30, 2018 as compared to the nine months ended September 30, 2017. On a same-store basis, net operating revenues per adjusted admission increased 3.6%, while inpatient admissions decreased by 2.4% and adjusted admissions decreased by 0.9% for the nine months ended September 30, 2018, compared to the nine months ended September 30, 2017.
Operating expenses, as a percentage of net operating revenues, decreased from 97.8% during the nine months ended September 30, 2017 to 97.0% during the nine months ended September 30, 2018. Operating expenses, excluding depreciation and amortization and impairment and (gain) loss on sale of businesses, as a percentage of net operating revenues, decreased from 89.4% for the nine months ended September 30, 2017 to 89.1% for the nine months ended September 30, 2018. Salaries and benefits, as a percentage of net operating revenues, decreased from 46.4% for the nine months ended September 30, 2017 to 45.3% for the nine months ended September 30, 2018. This decrease in salaries and benefits, as a percentage of net operating revenues, was primarily due to improved staffing and benefit expense management. Supplies, as a percentage of net operating revenues, decreased from 16.7% for the nine months ended September 30, 2017 to 16.6% for the nine months ended September 30, 2018. Other operating expenses, as a percentage of net operating revenues, increased from 24.3% for the nine months ended September 30, 2017 to 24.7% for the nine months ended September 30, 2018, primarily as a result of higher medical specialist fees, an increase in purchased services and higher information systems expense. Government and other legal settlements and related costs, as a percentage of net operating revenues, decreased from income of 0.3% for the nine months ended September 30, 2017 to expense of 0.1% for the nine months ended September 30, 2018 primarily due to the gain recorded from the settlement of the shareholder derivative action in January 2017. Rent, as a percentage of net operating revenues, decreased from 2.5% for the nine months ended September 30, 2017 to 2.4% for the nine months ended September 30, 2018.
Depreciation and amortization, as a percentage of net operating revenues, decreased from 5.4% for the nine months ended September 30, 2017 to 5.0% for the nine months ended September 30, 2018, primarily due to ceasing depreciation on property and equipment at hospitals sold or held for sale.
Impairment and (gain) loss on sale of businesses was $314 million for the nine months ended September 30, 2018, compared to $363 million for the nine months ended September 30, 2017. Impairment of goodwill and long-lived assets for the nine months ended September 30, 2018 included (i) impairment of $225 million recorded to reduce the carrying value of certain hospitals that have been sold or deemed held for sale based on the difference between the carrying value of the hospital disposal groups compared to estimated fair value less costs to sell, (ii) approximately $29 million recorded towrite-off the value of a promissory note received as consideration for the sale of three hospitals in 2017 where the buyer recently entered into bankruptcy proceedings, and (iii) approximately $60 million recorded primarily to adjust the carrying value of other long-lived assets at several underperforming hospitals that have ceased operation or where we are in discussions with potential buyers for divestiture at a sales price that indicates a fair value below carrying value. Impairment of goodwill and long-lived assets for the nine months ended September 30, 2017 included impairment of approximately $363 million related to impairment of the long-lived assets and reporting unit goodwill allocated to hospitals classified as held for sale during the nine months ended September 30, 2017.
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