Christopher Reading
Analyst · CJS Securities
Thanks, Johnny, and sorry for jumping the gun there. For the quarter, U.S. Physical Therapy's net income attributable to its shareholders' GAAP measure was $4.8 million or $0.38 per diluted share as compared to $4.5 million or $0.36 per diluted share for the 2016 period. Net revenues increased $10.7 million or 12.3%, primarily due to a 10.1% increase in net patient revenue from physical therapy operations, higher revenues from management contracts, primarily due to an increase in the number of facilities managed by the company and 1 month of revenues from the workforce prevention business acquired in March 2017.
Total patient visits increased by 10.3%, partially offset by an $0.18 decrease in average net patient revenue per visit: revenues from management contracts, 1.1 -- I'm sorry, $1.9 million as compared to $1.4 million for the 2016 period; revenues from the recently-acquired industrial prevention business, $1.5 million for the month of March 2017.
Total clinic operating costs were 78.7% of net revenues compared to 76.4% of net revenues in the 2016 period: $8.9 million of the $10.4 million increase in operating cost related to new clinics opened or acquired in the past 12 months; $1.1 million related to a full quarter of activity in 2017 for clinics opened or acquired in the first quarter of 2016; and the addition of the industrial prevention business; the remaining cost, approximately $0.4 million, related to legacy clinics.
Clinic salaries and related costs including those from new clinics were 57.2% of net revenue in the recent 2017 quarter versus 55% for the 2016 period. Rent, clinic supplies, contract labor and other costs as a percentage of net revenues were 20.6% for the recent quarter versus 20.1% for the 2016 period. The provision for doubtful accounts as a percent of net revenues was 0.9% for the first quarter of 2017 as compared to 1.3% in the 2016 period. Day sales outstanding ended March at 39 days.
The gross margin for the first quarter of 2017 was $20.7 million or 21.3% of revenue as compared to $20.5 million or 23.6% of revenue for the 2016 quarter. Gross margin for the company's physical therapy clinics, 21.5% in the recent quarter compared to 23.6% a year earlier. Gross margin on management contracts was 14.8% in the first quarter of 2017 as compared to 19.8% in 2016. The gross margin for the recently acquired industrial prevention business was 14.3%.
Corporate office costs were $8.5 million in the first quarter of 2017 compared to $9 million in the 2016 first quarter. Interest expense - mandatorily redeemable noncontrolling interest - change in redemption value increased $2.7 million in the first quarter of 2017, up from $2.2 million in the 2016 first quarter. Change in redemption value for these acquired partnerships is based on the redemption amount, which is derived from a formula on that specific multiple times the underlying business' trailing 12 months of earnings pretax or EBITDA without our management fee at the end of the reporting period compared to the end of the previous reporting period.
This is a non-cash item and is directly related, in this case, to the increase in profitability and underlying value of the company's acquired partnerships. Also under interest expense - mandatorily redeemable noncontrolling interest - earnings allocable, which represent the portion of earnings allocable to our holders of mandatorily redeemable noncontrolling interest, increased to $1.3 million in the 2017 first quarter from $0.9 million in the 2016 period.
Finally, interest expense - debt and other, was $0.4 million in the first quarter of '17 compared to $0.3 million in the 2016 period. The provision for income taxes for the 2017 first quarter was $1.8 million; and in 2016 first quarter, $2.2 million. Our effective tax rate was 27.3% in this 2017 first quarter and 32.6% in 2016 Q1. Included in the first quarter of 2017 was an excess tax benefit of $0.8 million related to the adoption of revised guidance on the accounting for stock compensation as compared to $0.5 million in the first quarter 2016.
You might remember that we were permitted early adoption beginning fourth quarter 2016. And as such, we pushed that adoption back across all of the 2016 quarters, which results in our quarter-over-quarter comparison that I just described. Same-store revenues and visits increased slightly for de novo and acquired clinics open for 1 year or more. Same-store net revenue per visit was stable.
Okay. Now for some color on the quarter. First, we are all very happy to be done with the restatement and current with all of our filings. We appreciate everyone hanging in there with us as we worked our way through this process. While we had lots of people focused on that, we were also busy running the company and getting things done, which will help us grow further and forward.
First, we rolled out our new analytics tool, which our partners and staff were using to help identify and impact additional referral opportunities. We're expecting that to bear good fruit as the year progresses. Additionally, we have been working hard, very hard in fact, on development opportunities. Our organic opening schedule is shaping up very well in the year on par right now or possibly a little ahead of last year, which you might remember was our best in the past 10 years for organic openings.
Our acquired activity has been very good as well. And importantly, all the deals that we've done recently are performing very well out of the gate, including our industrial prevention deal that we completed at the end of February. And we have more good things to come in the near term along those same lines. These deals are causing our margins to move around the good bit, though. Many or most have a higher cost structure than we do with the majority -- as compared to the majority of our base USPh facilities.
We have opportunity, however, across the platform to better align to flat to slightly down net rate with our labor cost. That, as you know, is an ongoing opportunity although most recently, we further adjusted our structure, taking out about $2 million in what will be annual cost. Additionally, we are continuing to consolidate many of our smaller partnerships, billing centers in the large -- larger, more efficient collection centers, which should help over time.
So again, speaking to the first quarter and it seems strange to be doing that now as we head into the 4th of July weekend. Same-store was a little bit flat, and it hurts me to say it, particularly considering the time in the year that we are right now, but weather was a little bit of a factor, particularly in some of our big partnerships in the Pacific Northwest and a few pockets in the East. Visits per clinic per day, however, progressed sequentially in the quarter and have continued a nice forward progression since then.
So that concludes my prepared comments. I expect that we're going to have plenty of questions. So operator let's go ahead and open up the lines, and we'll be happy to start addressing those.