“Analytical Gaps” Between an Expert’s Data and Opinions Put Expert Opinions at Risk

12/04/2017

Stanley Rochkind v. Starlena Stevenson, July 11, 2017 (Court of Appeals of Maryland)

In Rochkind v.Stevenson, the Maryland Court of Appeals held that the trial court abused its discretion when it admitted a physician’s expert testimony pursuant to Md. Rule 5-702(3) linking a Plaintiff’s ADHD diagnosis with lead poisoning, when the physician relied on studies that did not adequately demonstrate a causal link between lead exposure and a general and specific ADHD diagnosis.

In the fall of 1991, 10-month-old Starlena Stevenson resided at a 3823 Fairview Avenue, which was owned in part by Stanley Rochkind.  The Fairview residence contained flaking and chipped paint.  Lead testing performed decades later revealed lead-based paint on multiple interior and exterior surfaces at the Fairview residence.

By age 5, Stevenson was diagnosed with ADHD and prescribed medication after being evaluated by psychologist Dr. Stephen Ley.  Stevenson continued to suffer other mental illnesses as she got older, including depression and auditory hallucinations.

In December 2011, Stevenson sued Rochkind in the Circuit Court for Baltimore City for negligence and violations of the Maryland Consumer Protection Act.  In February 2013, pediatrician Celia Hall-Carrington, M.D. drafted a report concluding that that Stevenson was poisoned by lead at the Fairview residence, and that the lead poisoning was a significant contributing factor to all of Stevenson’s neuropsychological problems, including her ADHD.

The case proceeded to trial, and the jury awarded a verdict in Stevenson’s favor; however, the trial court granted, in part, Rochkind’s motion for new trial, ordering a new trial on the issue of damages alone.  Before the second trial in October 2014, Rochkind renewed motions in limine, which had been raised before the first trial, requesting that the court exclude Dr. Hall-Carrington’s testimony that Stevenson’s lead exposure caused Stevenson’s cognitive defects, specifically ADHD.  The trial court denied Rochkind’s motions.

Dr. Hall-Carrington’s opinions relied on an EPA publication entitled “Integrated Science Assessment for Lead” (“EPA-ISA”), which posits that “multiple, high quality epidemiological studies” revealed “a causal relationship between lead exposure and attention decrements, impulsivity, and hyperactivity in children.”  Dr. Hall-Carrington testified during the second trial that the epidemiological studies found that children with blood-lead levels similar to Stephenson’s can have attention problems.  Dr. Hall-Carrington conceded that the EPA-ISA did not mention ADHD specifically, but testified that the EPA-ISA contains a listing of ADHD symptoms.

Following the second trial, the jury returned a verdict exceeding $1.4 million.  Rochkind filed a motion for a new trial, which the court denied.

On appeal, the Maryland Court of Special Appeals affirmed the trial court’s ruling admitting Dr. Hall-Carrington’s testimony.  The Court of Special Appeals held that Dr. Hall-Carrington’s ADHD causation testimony was admissible under Maryland Rule 5-702 because her opinion was supported by an adequate factual basis.

Rochkind then petitioned the Maryland Court of Appeals to consider, in part, if the trial court had erred in admitting Dr. Hall-Carrington’s general and specific causation testimony under Maryland Rule 5-702.  Rochkind argued that Dr. Hall-Carrington’s testimony did not satisfy Maryland Rule 5-702(3)’s requirement that there be a sufficient factual basis to support expert testimony because Dr. Hall-Carrington did not rule out other potential causes of ADHD.  Rochkind further argued that Dr. Hall-Carrington was required to cite epidemiological studies finding a causal link between lead poisoning and ADHD in lieu of providing a differential diagnosis.  Stevenson argued that Dr. Hall-Carrington’s testimony satisfied Maryland Rule 5-702(3) because Dr. Hall-Carrington relied upon extensive support for the conclusion that lead exposure can cause ADHD.

As a case of first impression in Maryland, the Court of Appeals relied upon the rationale of the United States Supreme Court in General Electric Co. v. Joiner, 522 U.S. 136 (1997), holding that the trial court abused its discretion in admitting Dr. Hall-Carrington’s testimony that lead poisoning caused Stevenson’s ADHD.  In doing so, the Court of Appeals pointed to the fact that, although the studies cited in the EPA-ISA link lead exposure and attention deficits and hyperactivity, those same studies do not state that lead exposure causes ADHD. More importantly, the court further noted that EPA-ISA finding of a lead-associated increase in ADHD was “not a major consideration,” and that an ADHD diagnosis is also attributable to factors such as socioeconomic status and parental education and caregiving.  Without any other scientific evidence or epidemiological studies to support the opinions that lead exposure causes ADHD in general, or specifically in Stevenson’s case, the court found that Stevenson failed to meet her burden in demonstrating that Dr. Hall-Carrington based her testimony on an adequate supply of date as required by Maryland Rule 5-702(3).

This case is important to Maryland attorneys and insurers when consulting and retaining experts in all fields.  In doing so, it is crucial that the expert be able to base his or her opinions on scientific research and studies that sufficiently support the expert’s opinions.  If there is any perceived “analytical gap” between the expert’s data and his or her conclusion(s), Rochkind v. Stevenson paves the way for Maryland trial courts to exclude, or truncate, the expert’s testimony.


- Benjamin Beasley, Associate 
  Rollins, Smalkin, Richards & Mackie, LLC