David O'Riordan, PhD

533 Parnassus Avenue
San Francisco, CA 94117

My program of research addresses two distinct fields of inquiry, 1) Patient level clinical research in palliative care is aimed at assessing the prevalence and severity of symptoms among chronically ill patients; and 2) institutional and programmatic research focuses on examining the characteristics of palliative care programs and the impact on patient level outcomes.

Recent Articles (70)

Anderson WG, Puntillo K, Cimino J, Noort J, Pearson D, Boyle D, Grywalski M, Meyer J, O'Neil-Page E, Cain J, Herman H, Barbour S, Turner K, Moore E, Liao S, Ferrell B, Mitchell W, Edmonds K, Fairman N, Joseph D, MacMillan J, Milic MM, Miller M, Nakagawa L, O'Riordan DL, Pietras C, Thornberry K, Pantilat SZ. Palliative Care Professional Development for Critical Care Nurses: A Multicenter Program. Am J Crit Care. 2017 Sep; 26(5):361-371.

Conway R, Cournane S, Byrne D, O'Riordan D, Silke B. Survival analysis of weekend emergency medical admissions. QJM. 2017 May 01; 110(5):291-297.

Pantilat SZ, Marks AK, Bischoff KE, Bragg AR, O'Riordan DL. The Palliative Care Quality Network: Improving the Quality of Caring. J Palliat Med. 2017 Aug; 20(8):862-868.

Stott DJ, Rodondi N, Kearney PM, Ford I, Westendorp RG, Mooijaart SP, Sattar N, Aubert CE, Aujesky D, Bauer DC, Baumgartner C, Blum MR, Browne JP, Byrne S, Collet TH, Dekkers OM, den Elzen WP, Du Puy RS, Ellis G, Feller M, Floriani C, Hendry K, Hurley C, Jukema JW, Kean S, Kelly M, Krebs D, Langhorne P, McCarthy G, McCarthy V, McConnachie A, McDade M, Messow M, O'Flynn A, O'Riordan D, Poortvliet RK, Quinn TJ, Russell A, Sinnott C, Smit JW, Van Dorland HA, Walsh KA, Walsh EK, Watt T, Wilson R, Gussekloo J. Thyroid Hormone Therapy for Older Adults with Subclinical Hypothyroidism. N Engl J Med. 2017 Apr 03.

McCabe JJ, Cournane S, Byrne D, Conway R, O'Riordan D, Silke B. Age and the economics of an emergency medical admission-what factors determine costs? QJM. 2017 Feb 01; 110(2):83-88.

Gordon NA, O'Riordan DL, Dracup KA, De Marco T, Pantilat SZ. Let Us Talk About It: Heart Failure Patients' Preferences Toward Discussions about Prognosis, Advance Care Planning, and Spiritual Support. J Palliat Med. 2017 Jan; 20(1):79-83.

Thygeson NM, Wang M, O'Riordan D, Pantilat SZ. Self-Reported California Hospital Palliative Care Program Composition, Certification, and Staffing Level Are Associated with Lower End-of-Life Medicare Utilization. J Palliat Med. 2016 Dec; 19(12):1281-1287.

Pantilat SZ, O'Riordan DL, Rathfon MA, Dracup KA, De Marco T. Etiology of Pain and Its Association with Quality of Life among Patients with Heart Failure. J Palliat Med. 2016 Dec; 19(12):1254-1259.

Conway R, Byrne D, O'Riordan D, Cournane S, Coveney S, Silke B. Influence of social deprivation, overcrowding and family structure on emergency medical admission rates. QJM. 2016 Oct; 109(10):675-680.

Beck KR, Pantilat SZ, O'Riordan DL, Peters MG. Use of Palliative Care Consultation for Patients with End-Stage Liver Disease: Survey of Liver Transplant Service Providers. J Palliat Med. 2016 Aug; 19(8):836-41.

Cournane S, Conway R, Byrne D, O'Riordan D, Coveney S, Silke B. Social deprivation and the rate of emergency medical admission for older persons. QJM. 2016 Oct; 109(10):645-651.

Walsh KA, O'Riordan D, Kearney PM, Timmons S, Byrne S. Improving the appropriateness of prescribing in older patients: a systematic review and meta-analysis of pharmacists' interventions in secondary care. Age Ageing. 2016 Mar; 45(2):201-9.

Kamal AH, Harrison KL, Bakitas M, Dionne-Odom JN, Zubkoff L, Akyar I, Pantilat SZ, O'Riordan DL, Bragg AR, Bischoff KE, Bull J. Improving the Quality of Palliative Care Through National and Regional Collaboration Efforts. Cancer Control. 2015 Oct; 22(4):396-402.

Conway R, Byrne D, O'Riordan D, Silke B. Patient risk profiling in acute medicine: the way forward? QJM. 2015 Sep; 108(9):689-96.

Bertain CJ, O'Riordan DL, Pantilat SZ. Learning from those without: identifying barriers and creating solutions to establishing hospital palliative care services. J Hosp Med. 2015 Apr; 10(4):254-5.

Reid T, O'Riordan DL, Mazzini A, Bruno KA, Pantilat SZ. Pediatric palliative care consultation services in California hospitals. J Palliat Med. 2014 Dec; 17(12):1306-10.

Rabow MW, O'Riordan DL, Pantilat SZ. A statewide survey of adult and pediatric outpatient palliative care services. J Palliat Med. 2014 Dec; 17(12):1311-6.

Cournane S, Byrne D, O'Riordan D, Fitzgerald B, Silke B. Chronic disabling disease--impact on outcomes and costs in emergency medical admissions. QJM. 2015 May; 108(5):387-96.

Conway R, Byrne DG, O'Riordan D, Silke B. Improved outcomes of high-risk emergency medical admissions cared for by experienced physicians. QJM. 2015 Feb; 108(2):119-25.

Pantilat SZ, O'Riordan DL, Bruno KA. Two steps forward, one step back: changes in palliative care consultation services in California hospitals from 2007 to 2011. J Palliat Med. 2014 Nov; 17(11):1214-20.

Chotirmall SH, Picardo S, Lyons J, D'Alton M, O'Riordan D, Silke B. Disabling disease codes predict worse outcomes for acute medical admissions. Intern Med J. 2014 Jun; 44(6):546-53.

Newman J, Egan T, Harbourne N, O'Riordan D, Jacquier JC, O'Sullivan M. Correlation of sensory bitterness in dairy protein hydrolysates: Comparison of prediction models built using sensory, chromatographic and electronic tongue data. Talanta. 2014 Aug; 126:46-53.

Coary R, Byrne D, O'Riordan D, Conway R, Cournane S, Silke B. Does admission via an acute medical unit influence hospital mortality? 12 years' experience in a large Dublin hospital. Acute Med. 2014; 13(4):152-8.

Romero-Ortuno R, O'Dwyer C, Byrne D, O'Riordan D, Silke B. A Risk Index for Geriatric Acute Medical Admissions (RIGAMA). Acute Med. 2014; 13(1):6-11.

Lyons J, Chotirmall SH, O'Riordan D, Silke B. Air quality impacts mortality in acute medical admissions. QJM. 2014 May; 107(5):347-53.

Conway R, O'Riordan D, Silke B. Long-term outcome of an AMAU--a decade's experience. QJM. 2014 Jan; 107(1):43-9.

Sinnott SJ, Buckley C, O'Riordan D, Bradley C, Whelton H. The effect of copayments for prescriptions on adherence to prescription medicines in publicly insured populations; a systematic review and meta-analysis. PLoS One. 2013; 8(5):e64914.

Lattig F, Fekete TF, O'Riordan D, Kleinstück FS, Jeszenszky D, Porchet F, Mutter U, Mannion AF. A comparison of patient and surgeon preoperative expectations of spinal surgery. Spine (Phila Pa 1976). 2013 May 20; 38(12):1040-8.

Conway R, Galvin S, Coveney S, O'Riordan D, Silke B. Deprivation as an outcome determinant in emergency medical admissions. QJM. 2013 Mar; 106(3):245-51.

Gomutbutra P, O'Riordan DL, Pantilat SZ. Management of moderate-to-severe dyspnea in hospitalized patients receiving palliative care. J Pain Symptom Manage. 2013 May; 45(5):885-91.

Schenker Y, Fernandez A, Kerr K, O'Riordan D, Pantilat SZ. Interpretation for discussions about end-of-life issues: results from a National Survey of Health Care Interpreters. J Palliat Med. 2012 Sep; 15(9):1019-26.

Pantilat SZ, O'Riordan DL, Dibble SL, Landefeld CS. An assessment of the screening performance of a single-item measure of depression from the Edmonton Symptom Assessment Scale among chronically ill hospitalized patients. J Pain Symptom Manage. 2012 May; 43(5):866-73.

Lawler S, McDermott L, O'Riordan D, Spathonis K, Eakin E, Leslie E, Gallois C, Berndt N, Owen N. Relationships of sun-protection habit strength with sunscreen use during outdoor sport and physical activity. Int J Environ Res Public Health. 2012 Mar; 9(3):916-23.

Pantilat SZ, Kerr KM, Billings JA, Bruno KA, O'Riordan DL. Characteristics of palliative care consultation services in California hospitals. J Palliat Med. 2012 May; 15(5):555-60.

Pantilat SZ, O'Riordan DL, Dibble SL, Landefeld CS. Longitudinal assessment of symptom severity among hospitalized elders diagnosed with cancer, heart failure, and chronic obstructive pulmonary disease. J Hosp Med. 2012 Sep; 7(7):567-72.

Berger GN, O'Riordan DL, Kerr K, Pantilat SZ. Prevalence and characteristics of outpatient palliative care services in California. Arch Intern Med. 2011 Dec 12; 171(22):2057-9.

Pantilat SZ, Kerr KM, Billings JA, Bruno KA, O'Riordan DL. Palliative care services in California hospitals: program prevalence and hospital characteristics. J Pain Symptom Manage. 2012 Jan; 43(1):39-46.

Berndt NC, O'Riordan DL, Winkler E, McDermott L, Spathonis K, Owen N. Social cognitive correlates of young adult sport competitors' sunscreen use. Health Educ Behav. 2011 Feb; 38(1):6-14.

Mikulich O, Callaly E, Bennett K, O'Riordan D, Silke B. The increased mortality associated with a weekend emergency admission is due to increased illness severity and altered case-mix. Acute Med. 2011; 10(4):182-7.

Pantilat SZ, O'Riordan DL, Dibble SL, Landefeld CS. Hospital-based palliative medicine consultation: a randomized controlled trial. Arch Intern Med. 2010 Dec 13; 170(22):2038-40.

Glanz K, Gies P, O'Riordan DL, Elliott T, Nehl E, McCarty F, Davis E. Validity of self-reported solar UVR exposure compared with objectively measured UVR exposure. Cancer Epidemiol Biomarkers Prev. 2010 Dec; 19(12):3005-12.

Silke B, Kellett J, Rooney T, Bennett K, O'Riordan D. An improved medical admissions risk system using multivariable fractional polynomial logistic regression modelling. QJM. 2010 Jan; 103(1):23-32.

Grob D, Bartanusz V, Jeszenszky D, Kleinstück FS, Lattig F, O'Riordan D, Mannion AF. A prospective, cohort study comparing translaminar screw fixation with transforaminal lumbar interbody fusion and pedicle screw fixation for fusion of the degenerative lumbar spine. J Bone Joint Surg Br. 2009 Oct; 91(10):1347-53.

Gies P, Glanz K, O'Riordan D, Elliott T, Nehl E. Measured occupational solar UVR exposures of lifeguards in pool settings. Am J Ind Med. 2009 Aug; 52(8):645-53.

Kleinstück FS, Grob D, Lattig F, Bartanusz V, Porchet F, Jeszenszky D, O'Riordan D, Mannion AF. The influence of preoperative back pain on the outcome of lumbar decompression surgery. Spine (Phila Pa 1976). 2009 May 15; 34(11):1198-203.

O'Riordan DL, Nehl E, Gies P, Bundy L, Burgess K, Davis E, Glanz K. Validity of covering-up sun-protection habits: Association of observations and self-report. J Am Acad Dermatol. 2009 May; 60(5):739-44.

Maddock JE, O'Riordan DL, Lee T, Mayer JA, McKenzie TL. Use of sunglasses in public outdoor recreation settings in Honolulu, Hawaii. Optom Vis Sci. 2009 Feb; 86(2):165-6.

Whelan B, Bennett K, O'Riordan D, Silke B. Serum sodium as a risk factor for in-hospital mortality in acute unselected general medical patients. QJM. 2009 Mar; 102(3):175-82.

O'Riordan DL, Steffen AD, Lunde KB, Gies P. A day at the beach while on tropical vacation: sun protection practices in a high-risk setting for UV radiation exposure. Arch Dermatol. 2008 Nov; 144(11):1449-55.

Glanz K, McCarty F, Nehl EJ, O'Riordan DL, Gies P, Bundy L, Locke AE, Hall DM. Validity of self-reported sunscreen use by parents, children, and lifeguards. Am J Prev Med. 2009 Jan; 36(1):63-9.

Glanz K, Yaroch AL, Dancel M, Saraiya M, Crane LA, Buller DB, Manne S, O'Riordan DL, Heckman CJ, Hay J, Robinson JK. Measures of sun exposure and sun protection practices for behavioral and epidemiologic research. Arch Dermatol. 2008 Feb; 144(2):217-22.

O'Riordan DL, Glanz K, Gies P, Elliott T. A pilot study of the validity of self-reported ultraviolet radiation exposure and sun protection practices among lifeguards, parents and children. Photochem Photobiol. 2008 May-Jun; 84(3):774-8.

Sutton NM, Suzuki TM, Della D, Albright C, O'Riordan DL. Involving Hawai'i's youth as partners in global health initiatives to impact change at the local level. Hawaii Med J. 2007 Sep; 66(9):248-9.

Maddock JE, O'Riordan DL, Lunde KB, Steffen A. Sun protection practices of beachgoers using a reliable observational measure. Ann Behav Med. 2007 Aug; 34(1):100-3.

Glanz K, Jarrette AD, Wilson EA, O'Riordan DL, Jacob Arriola KR. Reducing minors' access to tobacco: eight years' experience in Hawaii. Prev Med. 2007 Jan; 44(1):55-8.

O'Riordan DL, Lunde KB, Steffen AD, Maddock JE. Validity of beachgoers' self-report of their sun habits. Arch Dermatol. 2006 Oct; 142(10):1304-11.

O'Riordan DL, Field AE, Geller AC, Brooks DR, Aweh G, Colditz GA, Frazier AL. Frequent tanning bed use, weight concerns, and other health risk behaviors in adolescent females (United States). Cancer Causes Control. 2006 Jun; 17(5):679-86.

Moloney ED, Bennett K, O'Riordan D, Silke B. Emergency department census of patients awaiting admission following reorganisation of an admissions process. Emerg Med J. 2006 May; 23(5):363-7.

Lee ET, O'Riordan D, Swetter SM, Demierre MF, Brooks K, Geller AC. Sun care advertising in popular U.S. magazines. Am J Health Promot. 2006 May-Jun; 20(5):349-52.

Kenfield SA, Geller AC, Richter EM, Shuman S, O'Riordan D, Koh HK, Colditz GA. Sun protection policies and practices at child care centers in Massachusetts. J Community Health. 2005 Dec; 30(6):491-503.

O'Riordan DL, Sutton N. A community-based approach to tobacco prevention: Hawaii's youth taking on the tobacco industry. Hawaii Med J. 2005 Nov; 64(11):310-2.

Glanz K, Steffen A, Elliott T, O'riordan D. Diffusion of an effective skin cancer prevention program: design, theoretical foundations, and first-year implementation. Health Psychol. 2005 Sep; 24(5):477-87.

Moloney ED, Smith D, Bennett K, O'riordan D, Silke B. Impact of an acute medical admission unit on length of hospital stay, and emergency department 'wait times'. QJM. 2005 Apr; 98(4):283-9.

O'Riordan DL, Lunde KB, Urschitz J, Glanz K. A noninvasive objective measure of sunscreen use and reapplication. Cancer Epidemiol Biomarkers Prev. 2005 Mar; 14(3):722-6.

Geller AC, Shamban J, O'Riordan DL, Slygh C, Kinney JP, Rosenberg S. Raising sun protection and early detection awareness among Florida high schoolers. Pediatr Dermatol. 2005 Mar-Apr; 22(2):112-8.

Geller AC, O'Riordan DL, Oliveria SA, Valvo S, Teich M, Halpern AC. Overcoming obstacles to skin cancer examinations and prevention counseling for high-risk patients: results of a national survey of primary care physicians. J Am Board Fam Pract. 2004 Nov-Dec; 17(6):416-23.

O'Riordan DL, Geller AC, Brooks DR, Zhang Z, Miller DR. Sunburn reduction through parental role modeling and sunscreen vigilance. J Pediatr. 2003 Jan; 142(1):67-72.

Stanton WR, Saleheen HN, O'Riordan D, Roy CR. Environmental conditions and variation in levels of sun exposure among children in child care. Int J Behav Med. 2003; 10(4):285-98.

Stanton WR, Chakma B, O'Riordan DL, Eyeson-Annan M. Sun exposure and primary prevention of skin cancer for infants and young children during autumn/winter. Aust N Z J Public Health. 2000 Apr; 24(2):178-84.

O'Riordan DL, Stanton WR, Eyeson-Annan M, Gies P, Roy C. Correlations between reported and measured ultraviolet radiation exposure of mothers and young children. Photochem Photobiol. 2000 Jan; 71(1):60-4.