Jessica Moore
Vice President, Investor Relations at Johnson & Johnson
Thanks, Joaquin. Unless otherwise stated, the financial results and guidance highlighted reflects the continuing operations of Johnson & Johnson. We will report the consumer health financial results as discontinued operations. Furthermore, the percentages quoted represent operational results and therefore exclude the impact of currency translation.
Starting with Q4 2023 sales results. Worldwide sales were $21.4 billion for the fourth quarter of 2023. Sales increased 7.2%, with 11% in the U.S. and 2.7% outside of the U.S. Excluding the net impact of acquisitions and divestitures, adjusted operational sales growth was 5.7% worldwide, 8.8% in the U.S. and 2.1% outside the U.S. It is important to note that sales in Europe were negatively impacted by the COVID-19 vaccine and loss of exclusivity of ZYTIGA by approximately 1,500 basis points operationally.
Turning now to earnings. For the quarter, net earnings were $4.1 billion and diluted earnings per share was $1.70 versus diluted earnings per share of $1.22 a year ago. Excluding after-tax intangible asset amortization expense and special items for both periods, adjusted net earnings for the quarter were $5.6 billion and adjusted diluted earnings per share was $2.29, representing increases of 2.4% and 11.7%, respectively, compared to the fourth quarter of 2022. On an operational basis, adjusted diluted earnings per share increased 11.2%. For the full year 2023, sales were $85.2 billion. Sales grew 7.4% with 10.6% in the U.S. and 3.8% outside of the U.S. Excluding the net impact of acquisitions and divestitures, adjusted operational sales growth was 5.9% worldwide, 8.2% in the U.S. and 3.4% outside the U.S.
Sales in Europe were negatively impacted by the COVID-19 vaccine and loss of exclusivity of ZYTIGA by approximately 1,000 basis points operationally. Net earnings for the full year 2023 were $13.3 billion and diluted earnings per share was $5.20 versus diluted earnings per share of $6.14 a year ago. Full year 2023 adjusted net earnings were $25.4 billion and adjusted diluted earnings per share was $9.92, representing increases of 6.8% and 11.1%, respectively, versus full year 2022. On an operational basis, adjusted diluted earnings per share increased by 10.8%.
I will now comment on business sales performance in the quarter. Beginning with Innovative Medicine. Worldwide Innovative Medicine sales of $13.7 billion increased 4% with growth of 9.5% in the U.S. and a decline of 3.1% outside of the U.S. Excluding COVID-19 vaccine sales, worldwide and U.S. sales growth was 9.5% and growth outside of the U.S. was 9.4%. Sales outside the U.S. excluding the COVID-19 vaccine were negatively impacted by approximately 120 basis points due to the loss of exclusivity of ZYTIGA in Europe.
Innovative Medicine growth was driven by our key brands and continued uptake from recently launched products with nine assets delivering double-digit growth. We continue to drive strong sales growth for both DARZALEX and ERLEADA with increases of 22.2% and 19%, respectively. Within immunology, we saw sales growth in both STELARA and TREMFYA with increases of 14.5% and 20.5%, respectively. This growth was driven by market growth and share gains as well as favorable patient mix in TREMFYA. Growth of 17.4% in pulmonary hypertension was driven by favorable patient mix, share gains and market growth.
Turning to newly launched products. We continue to make progress on our launches of CARVYKTI and SPRAVATO. We are also encouraged by the early success of our launches of TECVAYLI and TALVEY, sales of which are driving the growth in other oncology. As a reminder, we expect to begin disclosing TECVAYLI sales in Q1 2024. Total Innovative Medicine sales growth was partially offset by unfavorable patient mix in XARELTO, a decrease in IMBRUVICA sales due to competitive pressures and a loss of exclusivity of ZYTIGA, REMICADE and PREZISTA.
I'll now turn your attention to MedTech. Worldwide MedTech sales of $7.7 billion increased 13.4% with Abiomed contributing 4.5% to growth. Growth in the U.S. was 14.1% and 12.8% outside of the U.S. Excluding the impact of acquisitions and divestitures, worldwide adjusted operational sales growth was 9.1%. MedTech was negatively impacted by international sanctions in Russia worth approximately 50 basis points, primarily in Advanced Surgery and Vision.
Electrophysiology delivered double-digit growth of 25.2% with strong growth in all regions, including Europe. This growth was driven by our global market leading portfolio, including the most recently launched QDOT RF ablation and OCTARAY catheters. Abiomed contributed $340 million in sales within the quarter driven by continued strong adoption of Impella 5.5 technology. Growth of 6.4% in surgery was driven primarily by procedure recovery and strength of our biosurgery and wound closure portfolios. Growth was partially offset by volume based procurement in China, primarily in Endocutters.
Orthopaedics growth of 5% reflects procedure growth, success of recently launched products such as the global expansion of our VELYS digital solutions and expansion in ambulatory surgical centers, as well as lapping of prior year China's VBP price concessions in Spine. Growth of 6.6% in Vision was driven by price actions and contact lenses as well as strength of new products including ACUVUE OASYS 1-Day family of products and contact lenses and TECNIS EYHANCE, our monofocal interocular lens and surgical vision. Growth of contact lenses was partially offset by U.S. stocking dynamics. Global Vision growth was negatively impacted by 140 basis points due to the Blink divestiture in Q3.
Now turning to our consolidated statement of earnings for the fourth quarter of 2023. I'd like to highlight a few noteworthy items that have changed compared to the same quarter of last year. Cost of products sold margin deleveraged by 130 basis points due to commodity inflation and unfavorable product mix in MedTech, partially offset by favorable patient mix and lower COVID-19 vaccine supply network related exit cost in Innovative Medicine. We continue to invest strategically in research and development at competitive levels investing $4.5 billion or 20.9% of sales this quarter. We invested $3.4 billion or 24.5% of sales in Innovative Medicine with the increase in investment being driven by higher milestones, partially offset by portfolio prioritization.
In MedTech, R&D investment was $1.1 billion or 14.6% of sales with the increase in investment primarily driven by the Laminar acquisition. Interest income was $212 million in the fourth quarter of 2023 as compared to $77 million of income in the fourth quarter of 2022. The increase in income was driven by higher interest rates earned on cash balances and a lower average debt balance. The other income and expense line was income of $421 million in the fourth quarter of 2023 compared to an expense of $795 million in the fourth quarter of 2022. This was primarily driven by higher unrealized gains on securities and lower COVID-19 vaccine-related exit costs.
Regarding taxes in the quarter, our effective tax rate was 14.4% versus 16% in the same period last year. This decrease was primarily driven by the net decrease of tax liabilities, including the settlement of the 2013 through 2016 U.S. tax audit. Excluding special items, the effective tax rate was 10.8% versus 16.2% in the same period last year. I encourage you to review our upcoming 2023 10-K filing for additional details on specific tax-related matters. Lastly, I will direct your attention to the box section of the slide where we have also provided our income before tax, net earnings and earnings per share adjusted to exclude the impact of intangible amortization expense and special items.
Now let's look at adjusted income before tax by segment. In the fourth quarter of 2023, our adjusted income before tax for the enterprise as a percentage of sales decreased from 32.5% to 29.2%. Innovative Medicine margins declined from 37.7% to 37.4%, primarily driven by higher R&D milestones, partially offset by favorable patient mix and leveraging and selling and marketing expense. MedTech margins declined from 24.5% to 15.5% primarily driven by in-process research and development expense from the Laminar acquisition, commodity inflation and unfavorable product mix, partially offset by selling and marketing expense leverage.
This concludes the sale and earnings portion of the call. I'm now pleased to turn it over to Joe.