Ron Bruehlman
Chief Financial Officer & Executive Vice President at IQVIA
Thanks, Ari, and good morning, everyone. Let's start with revenue. 4th-quarter revenue of $3.958 million grew 2.3% on a reported basis and 3% at constant-currency. In the quarter, COVID-related revenues were approximately $10 million, which is down about $50 million versus the 4th-quarter of 2023. Excluding all COVID-related work, both from this year and from last, constant-currency growth was about 4.5%.
And as Ari mentioned, acquisitions contributed approximately 2 points of this growth. Technology and Analytics Solutions revenue for the 4th-quarter was $1.658 million, which was up 8.3% reported and 9.5% at constant-currency. R&D Solutions 4th-quarter revenue of $2,123 million was down 1.3% reported and 1% at constant-currency, but excluding all COVID-related work, R&DS revenue grew over 1% at constant-currency. And finally, contract sales and Medical Solutions 4th-quarter revenue of $177 million declined 4.8% reported and 3.2% at constant-currency.
Now for the full-year, revenue was $15,405 million, that's up 2.8% reported and 3.4% at constant-currency. COVID-related revenue totaled approximately $110 million for the year. Excluding all COVID-related work from this year and last, constant-currency growth in revenue was 5.5% for the year. Full-year technology and Analytics Solutions revenue of $6.160 million, that was up 5.1% reported 5.7% at constant-currency and 6.5% excluding all COVID-related work at constant currencies.
Full-year revenue in R&D Solutions was $8.527 million, up 1.6% on a reported basis, 2% at constant-currency, excluding all COVID-related work, growth in constant-currency in R&DS was over 5%. And finally, our full-year CSMS revenue was $718 million, down 1.2% reported, but up 1.4% at constant-currency. As Ari mentioned in his opening remarks, the 2024 growth trajectory in TaaS played out as we anticipated with improvements every quarter.
And we had -- we experienced a softening in growth rates throughout 2023 due to cautious customer discretionary spending. And we predicted that 2024 would be a turnaround year based on our forward-looking indicators in recent history. In fact, that's what happened. In 2024, cash growth picked-up significantly, finishing the second-half with high single-digit growth, driven by strong mid-single-digit organic growth. So as you know, TAS is a short-cycle part of our business.
And as we've seen, 2023 gave us early insight into customer spend behavior during the downturn. By the same token, we expect that the 2024 turnaround in serves as a good leading indicator of the industry's recovery for 2025. Let's move down to P&L. Adjusted EBITDA in the quarter was $996 million, representing growth of 3.1%. Full-year adjusted EBITDA was $3,684 million, that's up 3.2% year-over-year.
4th-quarter GAAP net income was $437 million and GAAP-diluted earnings per share was $2.42. For the full-year, GAAP net income was $1,373 million or $7.49 of earnings per diluted share. Adjusted net income was $564 million for the 4th-quarter and adjusted diluted earnings per share was $3.12, and that for the full-year brought adjusted net income to $2 billion 42 million and adjusted diluted earnings per share to $11.13. R&D's backlog at December 31 was $31.1 billion, an increase of 4.4% year-over-year and 5.5% at constant-currency.
And we anticipate the question that I think we'll get about why backlog was flat sequentially versus Q3. Recall that the dollar strengthened considerably during the 4th-quarter and we have to retranslate the backlog at the end of each quarter for reporting to you. And that knocked about $0.5 billion off the backlog, that retranslation alone. As of December 31, cash-and-cash equivalents totaled $1,702 million and gross debt was $13,983 million , resulting in net-debt of $12,281 million. Our net leverage ratio ended the year at 3.33 times trailing 12-month adjusted EBITDA. 4th-quarter cash-flow from operations was $885 million and CapEx was $164 million, resulting in free-cash flow of $721 million for the quarter, a record for quarterly free-cash flows. For the full-year, free-cash flow was $2,114 million, as Ari said, up 41% year-over-year. Now you note that in the quarter, we repurchased $1,150 million of our shares during our full-year share repurchase to $1,350 million. And on just yesterday, actually, the IQVIA Board of Directors replenished the share repurchase authorization by $2 billion, which increases the total remaining authorization to approximately $3 billion. Now let's turn to the guidance. For the full-year, we're reaffirming our 2025 outlook, which is for revenue growth at constant-currency ex-COVID of 4% to 7%, adjusted EBITDA margin expansion of up to 20 basis-points and adjusted diluted earnings per share growth of 5% to 9%. This translates into total revenue between $15 billion, $725 million and million, which includes just over a $100 million step-down in COVID-related work, which is entirely in R&DS and of which 75% will be in the first-half and 25% in the second-half. We expect 100 to 150 basis-points of contribution from M&A activity and an FX headwind should rates continue of approximately 150 basis-points versus 2024. Our adjusted EBITDA guidance is $3,765 million to $3,885 million and adjusted diluted EPS guidance is $11.70 to $12.10. This includes about $675 million of net interest expense, approximately $575 million of operational D&A, an effective income tax-rate of about 18.5% and an average diluted share count of approximately 178 million shares. The guidance also assumes $2 billion of cash deployment split between acquisitions and share repurchase. And finally, the guidance assumes that foreign currency rates as of February 5 continue for the balance of the year. Now at segment level, guidance is also unchanged for TAS, R&DS and CSMS. No changes in any of the segments. We expect TAS revenue to grow 5% to 7% at constant-currency, which translates into $6.3 billion to $6.5 billion. I note we'll have easier comps in the first-half than the second-half. R&DS revenue is expected to grow 4% to 6% at constant-currency ex-COVID, which translates into $8.7 billion to $8.9 billion of revenue. This guidance includes over $100 million of step-down in COVID-related revenue that represents about 100 basis-points of headwind to R&DS growth rate. We anticipate that R&DS growth rates will be lower in the first-half and improved sequentially thereafter. And finally, CSMS revenue is expected to be approximately $700 million and flattish year-over-year. Now let's look at first-quarter guidance. For the first-quarter, we expect revenue to be between million and $3.790 million. Note that Q1 has the largest impact in the year for both foreign-exchange and COVID revenue step-down for a total of approximately 300 basis-points of headwind. Adjusted EBITDA is expected to be between $870 million and $890 million in the quarter and adjusted diluted EPS is expected to be between $2.60 and $2.70. And as mentioned, our guidance assumes that foreign currency rates of February 5 continue for the balance of the year. So let's summarize, we delivered an excellent 4th-quarter, which closed out a strong year. For the full-year, revenue grew 5.5% at constant-currency, excluding COVID-related work, adjusted EBITDA margin continued to expand and adjusted diluted EPS was up 9.1%. Free-cash flow was a record in the quarter at $721 million, bringing the full-year to over $2.1 billion, up 41%. In the quarter, we repurchased $1,150 million of our shares. For the full-year, share repurchase was $1,350 million. Our Board of Directors increased our share repurchase authorization by $2 billion, which brings the remaining authorization to approximately $3 billion. During the year, we introduced 60 innovations, including 39 AI-enabled applications and the momentum continues to build with our recently-announced collaboration with NVIDIA. NVIDIA's iTunia was named a Fortune's list of World's Most Admired Companies for the eighth consecutive year and earned first-place ranking in our industry Group for the fourth consecutive year. And lastly, we reaffirmed our full-year 2025 revenue growth guidance at constant-currency of 4% to 7% adjusted EBITDA margin expansion of up to 20 basis-points and adjusted diluted earnings per share growth of 5% to 9%. And that concludes our formal remarks. Let me hand it back over to the operator to open up the call for Q&A. Thank you. At this time, I would like to remind everyone in order to ask a question, press star than number-one on your telephone keypad.