Senior Biostatistician, Biostatistics - Biomedical Informatics Research Center, Marshfield Clinic Research Foundation, Marshfield
1997 to 2001:
Biostatistics Manager, Department of Clinical Research, Marshfield Medical Research Foundation, Marshfield
1992 to 1997:
Senior Biostatistician, Department of Epidemiology and Biostatistics, Marshfield Medical Research Foundation, Marshfield
1990 to 1992:
Senior Biostatistician, Department of Biostatistics and Epidemiology, The Cleveland Clinic Foundation, Cleveland
1987 to 1990:
Biostatistician, Department of Biostatistics and Epidemiology, The Clevelend Foundation, Cleveland
1983 to 1987:
Research Associate, Agricultural Statistics Laboratory, University of Arkansas, Fayetteville
1982 to 1982:
Research Associate, Cooperative Fishery and Wildlife Research Unit, University of Wyoming, Laramie
1981 to 1982:
Consultant-Instructor, College of Agriculture, University of Wyoming, Laramie
Select Publications
Berg RL, Mcdonald L, Strickland M. (1983). Distribution of mountain lions in Wyoming as determined by mail questionnaire. Wild Soc Bull. 11 :265-268.
Berg RL, Kopple JD, Houser H, Steinman TI, Teschan P. (1989 November). Nutritional status of patients with different levels of chronic renal insufficiency. Modification of Diet in Renal Disease (MDRD) Study Group. Kidney Int Suppl. 27 :S184-S194.
PubMed ID:
2636655
Berg RL, Walker WG, Gassman JJ, Levey AS, Hall PM. (1989 November). Creatinine filtration, secretion and excretion during progressive renal disease. Modification of Diet in Renal Disease (MDRD) Study Group. Kidney Int Suppl. 27 :S73-S80.
PubMed ID:
2636677
Berg RL, Williams GW, Beck GJ, Coggins CH, Gassman JJ, Hunsicker LG, Schluchter MD. (1991 October). Design and statistical issues of the Modification of Diet in Renal Disease Trial. The Modification of Diet in Renal Disease Study Group. Control Clin Trials. 12(5):566-586.
PubMed ID:
1664792
Berg RL, Williams GW, Myers BD, Nelson RG, Bennett PH, Hardy SA,...Knowler WC. (1991). Glomerular function in Pima Indians with non-insulin dependent diabetes mellitus of recent onset. J Clin Invest. 88 :524-530.
Berg RL, Laidlaw SA, Kopple JD, Naito H, Walker WG, Walser M. (1994 April). Patterns of fasting plasma amino acid levels in chronic renal insufficiency: results from the feasibility phase of the Modification of Diet in Renal Disease Study. Am J Kidney Dis. 23(4):504-513.
PubMed ID:
8154485
Berg RL, Gassman JJ, Snetselaar L, Dwyer J, Adler S, Petot GJ, Homer H. (1994). Reduction of dietary protein and phosphorus in the modification of diet in renal disease feasibility study. J Am Diet Assoc. 94 :986-990.
Gribble RK, Berg RL, Ricci-Goodman JM. (1994). Screening for chlamydia trachomatis in low-risk obstetric patients. Infect Dis Obstet Gynecol. 1 :177-181.
Berg RL, Griese GG, DeStefano F. (1995 July). Determinants of serum lipid and lipoprotein concentrations in children. Epidemiology. 6(4):446-449.
PubMed ID:
7548360
Gribble RK, Berg RL, Fee SC. (1995 July). The value of routine urine dipstick screening for protein at each prenatal visit. Am J Obstet Gynecol. 173(1):214-217.
PubMed ID:
7631685
Gribble RK, Berg RL, Meier PR. (1995 September). The value of urine screening for glucose at each prenatal visit. Obstet Gynecol. 86(3):405-410.
PubMed ID:
7651652
Berg RL, Buckalew VM, Wang SS, Porush JG, Rauch S, Schulman G. (1996 December). Prevalence of hypertension in 1,795 subjects with chronic renal disease: the modification of diet in renal disease study baseline cohort. Modification of Diet in Renal Disease Study Group. Am J Kidney Dis. 28(6):811-821.
PubMed ID:
8957032
Berg RL, Plotka ED, Breden TG. (1996 July). Effects of substrate and separation method on acrosin amidase measurements. J Androl. 17(4):443-448.
PubMed ID:
8889708
Berg RL, Jacobson DM, Tetzlaff BA. (1996). Establishing an electroretinography laboratory according to an international standard. Am J END Technol. 36 :47-65.
Wengert TJ, Berg RL, Avecilla CS, Selthafner JV, Schlosser CT, Nitschke LF. (1996 April). Does patient-controlled analgesia achieve better control of pain and fewer adverse effects than intramuscular analgesia? A prospective randomized trial. Arch Surg. 131(4):417-423.
PubMed ID:
8615729
Dart RA, Berg RL. (1996 December). The clinical utility of ambulatory blood pressure monitoring in a multispecialty clinic setting. Blood Press Monit. 1(6):475-480.
PubMed ID:
10226278
Gribble RK, Berg RL, Mitchell PD, Goodman JR, Meier PR, Fee SC. (1997). Longitudinal study of Group B streptococcus carriage in pregnancy. Infect Dis Obstet Gynecol. 5 :237-243.
Berg RL, Reding DJ, Fischer VV, Lappe KA. (1998). Assessment of farmers' acceptance of veterinarians as human health advocates. Journal of Agromedicine. 5 :47-60.
Berg RL, Quail CA, Greenlee AR. (1999 November). Developmental alterations in murine embryos exposed in vitro to an estrogenic pesticide, o,p'-DDT. Reprod Toxicol. 13(6):555-565.
PubMed ID:
10613404
Krawisz BR, Berg RL, Shaw GR, Larson DM. (1999 September). Prognostic significance of DNA ploidy in endometrial cancer. Gynecol Oncol. 74(3):356-360.
PubMed ID:
10479493
Berg RL, Jacobson DM, Ellefson D, Wall M, Digre KB, Corbett JJ. (1999 September). Serum vitamin A concentration is elevated in idiopathic intracranial hypertension. NEUROLOGY. 53(5):1114-1118.
PubMed ID:
10496276
Berg RL, Quail CA, Greenlee AR. (2000 May). The antiestrogen ICI 182,780 abolishes developmental injury for murine embryos exposed in vitro to o,p'-DDT(1). Reprod Toxicol. 14(3):225-234.
PubMed ID:
10838123
Douglas-Jones JW, Berg RL, Maki HS, Reinhart RA, Ulmer RH, Ray JF,...Chaitman B [including Myers WO.] (2000 October). All-artery multigraft coronary artery bypass grafting with only internal thoracic arteries possible and safe: a randomized trial. Surgery. 128(4):650-659.
PubMed ID:
11015099
Berg RL, Belongia EA, Chyou P, Davis JP, Proctor M, Aharabi-Fard S,...Vandermause MF [including Knobloch MJ.] (2000 August). Antibiotic susceptibility of invasive Streptococcus pneumoniae in Wisconsin,1999. WMJ. 99(5):55-59.
PubMed ID:
11043072
Jensen RJ, Berg RL, Rokey R, Faciszewski T. (2001 March). Cardiac risk stratification of patients with symptomatic spinal stenosis. Clin Orthop. (384):110-115.
PubMed ID:
11249155
Berg RL, Kruse JR, Grinstead GF, Jacobson DM. (2001 June). Duration of positive urine for cocaine metabolite after ophthalmic administration: implications for testing patients with suspected Horner syndrome using ophthalmic cocaine. Am J Ophthalmol. 131(6):742-747.
PubMed ID:
11384570
Berg RL, Ruggles KH, Haessly-Ruggles SM. (2001 December). Prospective study of seizures in the elderly in the Marshfield Epidemiologic Study Area (MESA). EPILEPSIA. 42(12):1594-1599.
PubMed ID:
11879373
Marlenga BL, Berg RL, Pickett W. (2001 November). Agricultural work activities reported for children and youth on 498 North American farms. J Agric Saf Health. 7(4):241-252.
PubMed ID:
11787753
Marlenga BL, Berg RL, Pickett W. (2001 July). Assignment of work involving farm tractors to children on North American farms. Am J Ind Med. 40(1):15-22.
PubMed ID:
11439393
Urquhart AC, Berg RL. (2001 September). Hodgkin's and non-Hodgkin's lymphomas of the head and neck. LARYNGOSCOPE. 111(9):1565-1569.
PubMed ID:
11568605
Campbell LR, Berg RL, Ahmann PA, Linquist AJ, Theye FW, Van Erem AJ. (2001 January). Placebo-controlled evaluation of amphetamine mixture-dextroamphetamine salts and amphetamine salts (Adderall): efficacy rate and side effects. PEDIATRICS. 107(1):E10.
PubMed ID:
11134474
Marlenga BL, Berg RL, Pickett W. (2002 August). Evaluation of an enhanced approach to the dissemination of the <em>North American Guidelines for Children's Agricultural Tasks:</em> a randomized controlled trial. Prev Med. 35(2):150-159.
PubMed ID:
12200100
Hutchins LG, Urquhart AC, Berg RL. (2002 June). Distinguishing non-Hodgkin lymphoma from squamous cell carcinoma tumors of the head and neck by computed tomography parameters. LARYNGOSCOPE. 112(6):1079-1083.
PubMed ID:
12160277
Berg RL, Repking MC, Soroko YT, Clemment JA, Mitchell PL. (2002 December). Treatment of plantar verrucae using 2% sodium salicylate iontophoresis. Phys Ther. 82(12):1184-1191.
PubMed ID:
12444877
Jensen RJ, Berg RL, Faciszewski T. (2003 March). Procedural coding of spinal surgeries (CPT-4 versus ICD-9-CM) and decisions regarding standards. A multicenter study. SPINE. 28(5):502-507.
PubMed ID:
12616165
Marlenga BL, Berg RL, Pickett W. (2003 July). Parental knowledge of child development and the assignment of tractor work to children. PEDIATRICS. 112(1 Pt 1):e11-e16.
PubMed ID:
12837899
Marlenga BL, Berg RL, Pickett W. (2003 August). Growing up on the farm: some kids don't. J Agric Saf Health. 9(3):183-184.
PubMed ID:
12970948
Berg RL, Meyer JA, Nickerson HJ, Olson KA, Meier PR. (2003 January). Prevention of iron deficiency anemia in adolescent and adult pregnancies. Clin Med Res. 1(1):29-36.
PubMed ID:
15931282
Greenlee RT, Smith PN, Hayes JJ, Berg RL, Maassen KA, Chyou P,...Grierson P [including Vidaillet HJ, Sharma PP, Granada JF.] (2003). Mortality of primary versus secondary atrial fibrillation: a population based study from the Marshfield Epidemiologic Study Area. PACE. 26(4 Pt 2):1001.
Lee BC, Berg RL, Westaby JD. (2004 September). Impact of a national rural youth health and safety initiative: results from a randomized controlled trial. Am J Public Health. 94(10):1743-1749.
PubMed ID:
15451744
Marlenga BL, Berg RL, Pickett W, Murphy D. (2004 January). Operational characteristics of tractors driven by children on farms in the United States and Canada. J Agric Saf Health. 10(1):17-25.
PubMed ID:
15017802
Marlenga BL, Berg RL, Linneman JG, Zentner JL, Pickett W, Brison RJ. (2004 December). Evaluation of the <em>North American Guidelines for Children's Agricultural Tasks</em> using a case series of injuries. Inj Prev. 10(6):350-357.
PubMed ID:
15583256
Berg RL, Reding DJ, Fischer VV, Lappe KA. (2004 September). Assessment of farmers' acceptanc e of veterinarians as human health advocates. J Agromedicine. 9(2):291-305.
PubMed ID:
19785223
Berg RL, Reeser JC. (2004 September). Self reported injury patterns among competitive curlers in the United States: a preliminary investigation into the epidemiology of curling injuries. Br J Sports Med. 38(5):E29.
PubMed ID:
15388573
Caldwell MD, Berg RL, Glurich IE, Burmester JK, Hillman MA, Wilke RA. (2004 August). Relative impact of covariates in prescribing warfarin according to CYP2C9 genotype. Pharmacogenetics. 14(8):539-547.
PubMed ID:
15284536
Berg RL, Ellis TM, Greenlee AR. (2004 May). Low-dose agrochemicals and lawn care pesticides induce developmental toxicity in murine preimplantation embryos. Environ Health Perspect. 112(6):703-709.
PubMed ID:
15121514
Caldwell MD, Berg RL, Vidaillet HJ, Burmester JK, Hillman MA, Wilke RA. (2005 November). Impact of age, CYP2C9 genotype, and concomitant medication on the rate of rise for prothrombin time during the first 30 days of warfarin therapy. Clin Med Res. 3(4):207-213.
PubMed ID:
16303885
Berg RL, Reeser JC, Willick S, Rhea D. (2005 April). Motivation and satisfaction among polyclinic volunteers at the 2002 Winter Olympic and Paralympic Games. Br J Sports Med. 39(4):e20.
PubMed ID:
15793078
Marlenga BL, Berg RL, Zentner JL, Pickett W. (2005 June). Do parents' perceptions of risks protect children engaged in farm work? PREVENTIVE MEDICINE. 40(6):860-866.
PubMed ID:
15850888
Caldwell MD, Schmelzer JR, Berg RL, Glurich IE, Vidaillet HJ, Burmester JK,...Wilke RA [including Yale SH, Hillman MA.] (2005 August). A prospective, randomized pilot trial of model-based warfarin dose initiation using CYP2C9 genotype and clinical data. Clin Med Res. 3(3):137-145.
PubMed ID:
16160068
Berg RL, Ellis TM, Greenlee AR, Mercieca MD. (2005 July). Pregnancy outcomes for mouse preimplantation embryos exposed <em>in vitro</em> to the estrogenic pesticide<em>o,p'</em>-DDT. Reprod Toxicol. 20(2):229-238.
PubMed ID:
15907658
Nelson J, Berg RL, Glurich IE, Bryce DA. (2005 September). Intradiscal electrothermal annuloplasty therapy: a case series study leading to new considerations. WMJ. 104(6):39-46.
PubMed ID:
16218315
Berg RL. (2005 May). Sensitivity and specificity. Clin Med Res. 3(2):56.
Berg RL, Reeser JC, Fischer VV, Smith DT, Untiedt C, Kubista M, Liu K. (2005 March). Static magnetic fields neither prevent nor diminish symptoms and signs of delayed onset muscle soreness. Arch Phys Med Rehabil. 86(3):565-570.
PubMed ID:
15759245
Marlenga BL, Berg RL, Linneman JG, Doty BC. (2006 February). Evaluation of a policy to reduce youth tractor crashes on public roads. Injury Prev. 12(1):46-51.
PubMed ID:
16502564
Greenlee RT, McPherson EW, Berg RL, Benetti LL, Wagner SF, Giampietro PF. (2006 August). Acute health events in adult patients with genetic disorders: the Marshfield Epidemiologic Study Area. Genet Med. 8(8):474-490.
PubMed ID:
16912579
Marlenga BL, Berg RL, Linneman JG, Pickett W, Brison RJ, Dostaler S. (2007 April). Pediatric fall injuries in agricultural settings: a new look at a common injury control problem. J Occup Environ Med. 49(4):461-468.
PubMed ID:
17426530
Marlenga BL, Berg RL, Linneman JG, Pickett W, Morrongiello BA. (2007 October). A new approach to understanding pediatric farm injuries. Soc Sci Med. 65(7):1364-1371.
PubMed ID:
17583403
Peissig PL, Kitchner TE, Berg RL, McCarty DJ, Sijercic B, McCarty CA, Wilke RA. (2007 March). Use of an electronic medical record for the identification of research subjects with diabetes mellitus. Clin Med Res. 5(1):1-7.
PubMed ID:
17456828
Caldwell MD, Schmelzer JR, Zhang KQi, Berg RL, Glurich IE, Vidaillet HJ,...Yale SH [including Burmester JK.] (2007 March). Evaluation of genetic factors for warfarin dose prediction. Clin Med Res. 5(1):8-16.
PubMed ID:
17456829
Peissig PL, Berg RL, Brown-switzer C, Ghebranious N, McCarty CA, Wilke RA, Sirohi E. (2007 April). Construction of atorvastatin dose-response relationships using data from a large population-based DNA biobank. Basic Clin Pharmacol Toxicol. 100(4):286-288.
PubMed ID:
17371534
Marlenga BL, Berg RL, Linneman JG, Pickett W, Brison RJ. (2007 February). Changing the child labor laws for agriculture: impact on injury. Am J Public Health. 97(2):276-282.
PubMed ID:
17194860
Marlenga BL, Berg RL, Pickett W, Chang J, Fathallah F. (2008 July). Forces required to operate controls on farm tractors: implications for young operators. ERGONOMICS. 51(7):1096-108.
PubMed ID:
18568967
Marlenga BL, Berg RL, Linneman JG, Pickett W, Brison RJ, Morrongiello BA. (2008 May). Adult supervision and pediatric injuries in the agricultural worksite. Accid Anal Prev.. 40(3):1149-56.
PubMed ID:
18460383
Berg RL, Linneman JG, McCarty CA, Wilke RA, Krauss RM, Zhao C. (2008 October). Characterization of low-density lipoprotein cholesterol-lowering efficacy for atorvastatin in a population-based DNA biorepository. Basic Clin Pharmacol Toxicol. 103(4):354-9.
PubMed ID:
18834356
Marlenga BL, Berg RL, Linneman JG, Pickett W, Brison RJ, Dostaler S. (2008 November). Hospitalized head injuries in agricultural settings: Who are the vulnerable groups? Accident Analysis and Prevention. 40 :1943-48.
PubMed ID:
19068298
Caldwell MD, Berg RL, Burmester JK, Roden DM, Lee M, Wagner MJ,...Page D. (2009 February). Estimation of the warfarin dose with clinical and pharmacogenetic data. NEW ENGLAND JOURNAL OF MEDICINE. 360(8):753-64.
PubMed ID:
19228618
Marlenga BL, Berg RL, Linneman JG, Wood DJ, Broste SK, Pickett W,...Knobloch MJ [including Fitz-Randolph M, Kirkhorn SR.] (2009 December). Hearing conservation program for agricultural stude nts: Short-term outcomes from a cluster-randomized trial with planned long-term follow-up. PREVENTIVE MEDICINE. 49(6):546-52.
PubMed ID:
19800914
Caldwell MD, Schmelzer JR, Berg RL, Burmester JK, Yale SH. (2009 March). Is cost-effective genotype-informed warfarin dosing closer than we think? Ann Intern Med. [www.annals.org]
Dart RA, Berg RL, Glurich IE, Switzer SP, Wiley CL. (2010 March). Association of B-type natriuretic peptide (BNP) levels with estimated glomerular filtration rate (eGFR) and congestive heart failure (CHF). Clinical Medicine & Research. 8(1):7-11.
PubMed ID:
19920165
Berg RL, Reeser JC, Porucznik CA, Joy EA, Colliver EB, Willick SE. (2010 January). Risk factors for volleyball-related shoulder pain and dysfunction. Physical Medicine and Rehabilitation. 2(1):27-38.
PubMed ID:
20129510
Berg RL, McCarty CA, Wilke RA, Feng Q, Jiang L, Antonik M,...Gunnell-Santoro J. (2010 December). A common CNR1 (Cannabinoid Receptor 1) haplotype attenuates the decrease in HDL cholesterol that typically accompanies weight gain. PLoS One. 5(12):e15779.
PubMed ID:
21209828
Berg RL, Stemper ME, Borchardt MA, Sha J, Horneman AJ, Khajanchi BK,...Moyer NP. (2010 April). Distribution of Virulence Factors and Molecular Fingerprinting of Aeromonas Species Isolated from Water and Clinical Samples: Suggestive Evidence of Water-to-Human Transmission. Appl Environ Microbiol. 76(7):2313-25.
PubMed ID:
20154106
Caldwell MD, Berg RL, Burmester JK, Anderson JL, Deloukas P, Kim HH,...Pirmohamed M [including Dowd MB.] (2010 May). Integration of Genetic, Clinical, and INR Data to Refine Warfarin Dosing. Clin Pharmacol Ther. 87(5):572-8.
PubMed ID:
20375999
Berg RL, Onitilo AA, Engel JM. (2011 November). C-B2-02: Epidemiology of Tamoxifen and Thromboembolism Clinical Medicine & Research. 9(3-4):150.
PubMed ID:
22090543
Caldwell MD, Schmelzer JR, Berg RL, Glurich IE, Burmester JK, Yale SH. (2011 November). Absence of novel CYP4F2 and VKORC1 coding region DNA variants in patients requiring high warfarin doses. Clinical Medicine & Research. 9(3-4):119-24.
PubMed ID:
21562135
Urquhart AC, Berg RL, Antoniotti NM. (2011 July). Telemedicine - an efficient and cost-effective approach in parathyroid surgery. LARYNGOSCOPE. 121(7):1422-5.
PubMed ID:
21647908
Berg RL, Linneman JG, McKiernan FE. (2011 April). The utility of BMD Z-score diagnostic thresholds for secondary causes of osteoporosis. OSTEOPOROSIS INTERNATIONAL. 22(4):1069-77.
PubMed ID:
20533026
Caldwell MD, Schmelzer JR, Berg RL, Rottscheit CM, Glurich IE, Burmester JK, Yale SH. (2011 June). A randomized controlled trial of genotype-based Coumadin initiation. Genet Med. 13(6):509-18.
PubMed ID:
21423021
Foth WS, Kitchner TE, Berg RL, McCarty CA, Coleman LA, Cross DS, Strobush L. (2011 January). Dietary intake in the Personalized Medicine Research Project: a resource for studies of gene-diet interaction. Nutr J. 10 :13-25.
PubMed ID:
21276236
Cournoyer S, Berg RL, Linneman JG, McKiernan FE, Hocking JA. (2011 September). A Long Femur Scan Field Does Not Alter Proximal Femur Bone Mineral Density Measurements by Dual-Energy X-Ray Absorptiometry. J Clin Densitom. 14(3)
PubMed ID:
21652250
Peissig PL, Berg RL, Chen L, Linneman JG, McCarty CA, Rasmussen LV, Waudby CJ. (2011 November). Cataract research using electronic health records. BMC Ophthalmology. 11(32)
PubMed ID:
22078460
Berg RL, Shaw GR. (2012 December). Laboratory Evaluation for Vitamin B12 Deficiency: the Case for Cascade Testing. Clinical Medicine & Research. Epub Ahead of Print
PubMed ID:
23262189
Stankowski RV, Berg RL, Onitilo AA, Engel JM, Doi SA. R., Liang H. (2012 July). High-sensitivity C-reactive protein (hs-CRP) as a biomarker for trastuzumab-induced cardiotoxicity in HER2-positive early-stage breast cancer: a pilot study. BREAST CANCER RESEARCH AND TREATMENT. 134(1):291-8.
PubMed ID:
22476854
Peissig PL, Berg RL, Chen L, Linneman JG, Starren JB, McCarty CA,...Wilke R [including Waudby CJ.] (2012 March). Importance of multi-modal approaches to effectively identify cataract cases from electronic health records. JOURNAL OF THE AMERICAN MEDICAL INFORMATICS ASSOCIATION. 19(2):225-34.
PubMed ID:
22319176
Marlenga BL, Berg RL, Linneman JG, Wood DJ, Pickett W, Kirkhorn SR. (2012 July). Determinants of early-stage hearing loss among a cohort of young workers with 16-year follow-up. OCCUPATIONAL AND ENVIRONMENTAL MEDICINE. 69(7):479-84.
PubMed ID:
22447644
Berg RL, Onitilo AA, Engel JM, Glurich IE, Johnson JC, Doi SA. R.. (2012 July). Clustering of venous thrombosis events at the start of tamoxifen therapy in breast cancer: A population-based experience. THROMBOSIS RESEARCH. 130(1):27-31.
PubMed ID:
22154240
Kitchner TE, Berg RL, Welter JD, McCarty CA, Kemnitz JW. (2012 January). A novel gene-environment interaction involved in endometriosis. Int J Gynaecol Obstet. 116(1):61-3.
PubMed ID:
22024213
Rezkalla SH, Kanth R, Berg RL. (2012 July). Impact of lunar phase on the incidence of cardiac events. World Journal of Cardiovascular Diseases. 2(3):124-128.
Patchett RB, Berg RL, Burmester JK, McCarty CA, Wilke RA. (2012 June). Lack of association between polymorphisms in the prostaglandin F(2a) receptor and solute carrier organic anion transporter family 2A1 genes and intraocular pressure response to prostaglandin analogs. Opthalmic Genet. 33(2):74-6.
PubMed ID:
22060278
Berg RL, Belongia EA, Liu K. A randomized clinical trial of zinc nasal spray for treatment of upper respiratory infections in adults. Am J Med. 2019 February; 111(2):103-108.
PubMed ID:
11498062