On April 8, 2002, Louise Bullock, an eighty-year-old retired teacher, along with her daughter, Jan Reich, accompanied another of her daughters to the Rapides Regional ER. Louise Bullock’s other daughter, Beverly Merchant, now deceased, suffered from chronic asthma and was in the midst of an asthma attack. Ms. Bullock had already taken Beverly to her primary care physician’s clinic that day, but Beverly’s condition worsened at home, and Ms. Bullock was now rushing her to the ER. Beverly was pale and gasping for breath, and her oxygen level was in the eighties. Ms. Bullock and Jan answered questions for Beverly in triage. Beverly was wheeled into an examination room of the ER by a nurse. Jan and Ms. Bullock followed, pursuant to the hospital’s policy of allowing two visitors per patient into the examination room. Jan put the coats and purses she carried onto the only straight back chair in the room, and Ms. Bullock put her coat and purse there too. The nurse helped Beverly into the bed, administered a preliminary examination, and left the room. Ms. Bullock, exhausted, saw one available seat near the head of the patient bed, a rolling physician’s stool. The stool had no back and no arms.
Ms. Bullock attempted to sit on the rolling stool as she had sat on similar stools in the past. However, the stool immediately rolled out from under her and slammed into the wall as soon as the backs of her legs touched the stool. Ms. Bullock was already in a sitting position and could not prevent her downward motion. She fell to the floor and struck her head on a cabinet, blinding her for a couple of moments. She sustained a cerebral concussion. At the time of trial three years later, Ms. Bullock *173still had a knot behind her right ear where she struck the cabinet. Ms. Bullock also | ¡.sustained significant contusion injuries to her right hip. She was taken through triage herself and was put in an examination room next to her daughter’s.
Ms. Bullock was ultimately left with a permanent balance problem that caused her to become dependent for the first time on a cane and later on a walker. She had been a very active retiree, serving as councilwoman, president of her garden club, active gardener, producer of youth plays, and she enjoyed walking and riding a bicycle daily in summer and enjoyed ballroom dancing with her husband. After the accident, she was unable to resume these activities.
Prior to Ms. Bullock’s fall on April 8, 2002, Rapides Regional ER had eight reported incidences of similar falls to the floor involving these rolling physician’s stools in less than three years. Two incidents occurred on the same day, June 2, 1999, in two separate examination rooms of the ER, when two different visitors attempted to sit on two different rolling stools. One of these visitors fell against a glass cabinet and shattered the glass, resulting in shoulder and neck pain. Three incidents occurred in 2000. On February 22, 2000, a visitor in an examination room attempted to sit on a rolling stool and fell to the floor when the stool slipped from underneath him. On March 6, 2000, another visitor tried to sit on a rolling stool and fell to the floor when it rolled backward. On May 3, 2000, yet another visitor attempted to sit on a physician stool when it rolled backward, and she fell on her hip and then her right shoulder, resulting in pain in both areas. On June 7, 2001, a visitor again tried to sit on a doctor’s stool in an ER room and fell to the floor as the stool rolled out from under her. On August 1, 2001, another visitor fell off of the stool in an exam room in the ER. This time, the visitor had been told not to sit on the stool, but he did so anyway. The eighth incident occurred on March 24, 2002, two weeks before Ms. [ ^Bullock’s accident, when the stool rolled out from under a visitor while she was attempting to get up, causing her to hit her bottom on the floor and hit her head on a crash cart. She had to be assisted off the floor and into a wheelchair and had complaints of back pain.
Accordingly, Ms. Bullock’s fall in April 2002 was the ninth reported fall from a rolling physician stool since June of 1999 when the hospital began maintaining a data base for these incident reports. Additionally, the record contains reports of four similar falls by visitors after Ms. Bullock’s fall in 2002, with three incidents occurring in 2003 and one occurring in 2005.
While Ms. Bullock testified that there was no warning label on the stool in her daughter’s room, there was testimony that other stools in the ER had warning labels and that nurses were known to tell patients to be careful when sitting on the stools. There was also testimony that the labels on the stools were placed there not to warn of danger, but only to preserve them for use by physicians and medical staff so that the stools would be available when the medical personnel needed them.
Finding that the rolling stools were dangerous and that Rapides Regional had a duty to either put a warning or a wheel-locking mechanism on the rolling physician stool, the trial judge ultimately awarded Ms. Bullock $4,063.40 in special damages and $30,000.00 in general damages plus legal interest. The trial court assessed fault at fifty percent (50%) to Ms. Bullock and fifty percent (50%) to Rapides Regional. The final judgment to Ms. Bullock awarded her a total of $17,031.70 plus legal interest. Rapides Regional appealed the *174judgment, and Ms. Bullock answered the appeal.1
I ¿ASSIGNMENTS OF ERROR
The appellant, Rapides Regional, asserts five assignments of error:
1. The trial court committed legal error in finding Rapides Regional had a duty to warn.
2. The trial court committed legal error in misapplying the law of “design defect” and finding Rapides Regional breached a nonexistent “duty” to provide a locking mechanism for the rolling stool.
3. The trial court committed prejudicial legal error in admitting and relying upon inadmissible evidence of dissimilar incidents having no probative value.
4. The trial court erred in relying on its own speculation.
5. The trial court was manifestly erroneous in finding Rapides Regional at fault.
Answering the appeal, the appellee Ms. Bullock argues that the allocation of fault is erroneous.
DISCUSSION
Standard of Review
The manifest error standard of review is the proper standard to be applied in cases involving findings of unreasonable risks of harm or unreasonably dangerous defects. Reed v. Wal-Mart Stores, Inc., 97-1174 (La.3/4/98), 708 So.2d 362. Thus, an appellate court may not set aside a trial court’s findings of fact in the absence of manifest error or unless it is clearly wrong. Stobart v. State, Through DOTD, 617 So.2d 880 (La.1993); Rosell v. ESCO, 549 So.2d 840 (La.1989). A two-tiered test must be applied in order to reverse the findings of the trial court:
a. the appellate court must find from the record that a reasonable factual basis does not exist for the finding of the trial court, and
|Kb. the appellate court must further determine that the record establishes that the finding is clearly wrong (manifestly erroneous).
Mart v. Hill, 505 So.2d 1120, 1127 (La.1987).
Even where the appellate court believes its inferences are more reasonable than the fact finder’s, reasonable determinations and inferences of fact should not be disturbed on appeal. Arceneaux v. Domingue, 365 So.2d 1330 (La.1978). Additionally, a reviewing court must keep in mind that if a trial court’s findings are reasonable based upon the entire record and evidence, an appellate court may not reverse said findings even if it is convinced that had it been sitting as trier of fact it would have weighed that evidence differently. Housley v. Cerise, 579 So.2d 973 (La.1991). The basis for this principle of review is grounded not only upon the better capacity of the trial court to evaluate live witnesses, but also upon the proper allocation of trial and appellate functions between the respective courts.
Reports of Prior Occurrences
We will first address the assignment of error by Rapides Regional that the trial court improperly admitted reports of prior incidents involving rolling stools in the Rapides Regional ER. As indicated in the factual section above, the record con*175tains reports of eight visitors falling in connection with these rolling physician stools in the examination rooms of Rapides Regional’s ER department between June 1999 and March 2002, prior to the accident that caused Ms. Bullock’s injuries on April 8, 2002. The record also contains four post-injury incident reports. Rapides Regional contends that the reports are inadmissible because they are dissimilar, lack sufficient information to allow comparison with Ms. Bullock’s incident, and have no probative value. Specifically, Rapides Regional contends that the reports did not show the | ^physical or mental state of the person involved, the method used in attempting to sit on the rolling stool, the characteristics of the rolling stool involved, the person’s eyesight, and whether the person knew the stool had wheels before sitting on it.
Louisiana courts have found that evidence of prior accidents is admissible for the limited purpose of showing that a thing or place was dangerous and that the defendant knew of the dangerous condition. “[T]he prior accidents must be closely related in circumstance to the injury or hazard at issue.” Davis v. Louisiana Power & Light Co., 612 So.2d 235, 239 (La.App. 4 Cir.1992), writ denied, 615 So.2d 336 (La.1998). “[T]o be relevant, the other accidents should occur at substantially the same place and under substantially the same conditions and must be caused by the same or similar defect, danger, act or omission.” Lee v. K-Mart Corp., 483 So.2d 609, 613 (La.App. 1 Cir. 1985), writ denied, 484 So.2d 661 (La. 1986); Brodtmann v. Duke, 1996-0257 (La.App. 4 Cir. 2/11/98), 708 So.2d 447, writs denied, 98-0645, 98-0658 (La.4/24/98), 717 So.2d 1177-78, cert. denied, 525 U.S. 1017, 119 S.Ct. 541, 142 L.Ed.2d 450 (1998).
In the present case, all of the accidents reported occurred in Rapides Regional’s ER department examination rooms, which exist for the purpose of treating patients in some kind of distress, and accommodating those who bring them in. The rooms had all been similarly furnished with a patient bed, one straight back chair, and one physician’s rolling stool. The hospital’s policy throughout the ER was to allow two visitors with each patient admitted to its examination rooms therein. All of the persons who fell in connection with these stools were visitors accompanying a patient. This is true of the eight incidents preceding Ms. Bullock’s injury and of the four incidents following Ms. Bullock’s injury. Of course, the eight incidents ^preceding Ms. Bullock’s accident are the most probative because they indicate the hospital’s knowledge of existing conditions at the time Ms. Bullock was hurt. Six of the eight pre-injury incidents occurred when the visitor was attempting to sit on a similar stool and it rolled out from under him or her; one was attempting to get up off the stool; and one “fell off’ apparently after sitting.
Rapides Regional argues that in one case the person fell off the stool as a result of fainting. However, that isolated incident occurred on April 15, 2005, three years after Ms. Bullock’s accident and does not affect the eight similar accidents that occurred and were reported before Ms. Bullock’s injury, and of which the hospital had prior knowledge. Rapides Regional further argues that the picture of the stool attached to the accident report from August 17, 2001 shows a stool of a different design. This is not entirely correct. The stool appears to have four legs instead of five, as in Ms. Bullock’s case, but both stools have rollers on every leg and do not have backs or arms to grasp when attempting to sit, while sitting, or when attempting to rise. Testimony indicated *176that similar physician stools were put in every room. Based upon the foregoing, it is clear that the other accidents occurred at substantially the same place, under substantially the same conditions, and were caused by the same or similar danger. Rapides Regional’s assertion of error is without merit.
Duty To Warn
Rapides Regional contends that the trial court committed legal error in finding that the hospital had a duty to warn, because the stool was in good condition and did not have a defect according to Rapides Regional’s expert, Gerald Whitehouse. Rapides Regional argues that if there is no ruin, vice, or defect, there is no duty to warn and cites Crittenden v. Fidelity & Cas. Co. of N.Y., 88 So.2d 538, (La.App. 2 lsCir.1955) and Madden v. Saik, 511 So.2d 855 (La.App. 4 Cir.), writ denied, 514 So.2d 131 (La.1987).
In Crittenden, the plaintiff was a forty-five-year-old carpenter who visited the Warmack residence to discuss a business matter. The owner of the residence, Mr. Warmack, was not at home. The carpenter pulled forward a porch chair, and as he lowered himself onto the front edge of the chair, the base slipped on the smooth waxed concrete surface of the porch, causing him to fall and sustain a serious injury. Eye witnesses to the incident testified that the plaintiff attempted to seat himself on the forward or front edge of the chair, which caused it to tilt forward and slide backward. The plaintiff admitted that he had waxed the Warmack porch floor himself about two weeks prior to the accident. In addressing the questions of whether the chair was inherently dangerous or whether it was improperly used, the Crittenden court ultimately determined as follows:
There are no circumstances in this case which required of the insured special care toward plaintiff. Crittenden entered Warmack’s porch of his own accord. He was entirely familiar with the premises, having himself waxed the floor two weeks before and he had not only had occasion to observe the porch chair in question, but had actually seated himself in similar furniture. Obviously, Mr. and Mrs. Warmack had no more knowledge of any inherent danger in the use of the chair than plaintiff had himself. There should be, therefore, no reasonable basis for requiring a warning from Mr. or Mrs. Warmack since plaintiff was entirely familiar with the chair and knew that the porch was waxed.
Crittenden, 83 So.2d at 540-41 (emphasis added).
Crittenden, therefore, is factually distinguishable from the present case because in Crittenden there was no evidence of previous accidents or knowledge by the defendants that others had fallen from similar chairs on their porch. As a matter of law, the language in Crittenden supports a duty to warn in light of the knowledge possessed by Rapides Regional. More specifically, with regard to knowledge, the [ sCrittenden court cited 65 C.J.S., Negligence, § 50, p. 541 and articulated as follows:
‘The basis of the inviter’s liability for injuries sustained by the invitee on the premises rests on the owner’s superior knowledge of the danger, and as a general rule he is not liable for an injury to an invitee resulting from a danger which was obvious or should have been observed by the invitee in the exercise of reasonable care, or from a condition which ivas as well known or as obvious to the invitee as to the inviter, or which the inviter had no reason to believe would not be discovered by the invitee. There is no duty to warn the invitee of any defect or danger which is as well-known to *177 the invitee as to the owner or occupant, or which is obvious or which should be observed by the invitee in the exercise of ordinary care. However, even though the invitee has knowledge of the danger, or the defect is obvious, the duty of the owner or occupant to use reasonable care to keep the premises reasonably safe for invitees remains, and it runs concurrently with the duty of the invitee to protect himself, so that, where the invitee does not fully appreciate the danger or is without fault, the owner or occupant may be held liable for the injury. ’
Crittenden, 83 So.2d at 540 (emphasis added).
Accordingly, unlike Mr. and Mrs. War-mack in the Crittenden case, Rapides Regional in the present case had superior knowledge of the conditions on its premises. Rapides Regional knew of eight previous accidents involving their rolling physician stools, while Ms. Bullock had no such knowledge of previous accidents. In fact, she testified that she had sat on rolling stools in hospitals and doctors’ offices on several prior occasions without incident. In any event, Ms. Bullock was not as familiar with the stools and conditions at Rap-ides Regional as the defendant was familiar with its own premises.
While Ms. Bullock knew that the stool had rollers and was intended to roll, she had never had one suddenly roll out from under her in previous locations. Therefore, Ms. Bullock did not fully appreciate the danger, as she would have, had she known that Rapides Regional had had eight prior accidents involving the rolling physician |instools in their ER. Moreover, Ms. Bullock testified that if the stool had contained a visible warning of its slippery nature, she would not have sat on the stool. It is the superior knowledge of Rapides Regional of the previous accidents and the dangerous condition of the stools on their premises that created a duty to warn, and it is their breach of that duty that renders them liable for Ms. Bullock’s accident.
Rapides Regional also cites Madden, 511 So.2d 855, where the plaintiff asserted injuries caused by an uneven differential of five-eighths of an inch in a restaurant’s floor. Specifically, the plaintiff sustained a broken ankle when he jumped backward from the top of a table in the restaurant/bar, dropping thirty to thirty-six inches to the floor. There, the defendant’s son admitted that he was aware of the uneven spot in the floor. He testified that repairing it had been considered. However, the defect was located in a low-traffic area, and in fifteen years there had been only a couple of complaints about it. Significantly, there was no evidence of any prior harm caused by the uneven spot. Under the circumstances of that case, the court found that the uneven spot did not create an unreasonable risk of harm giving rise to a duty to warn. Accordingly, because there were no previous incidents of harm, Madden, is clearly distinguishable from the instant case.
Another case cited by Rapides Regional for the proposition that there is no duty to warn of open and obvious conditions is Goll v. Bugsy’s Bar and Grill, Inc., 2003-0475 (La.App. 4 Cir. 3/10/04), 870 So.2d 341. There, a restaurant patron was injured when he tripped on stairs attached to a stage, and the restaurant was not assessed any fault for the injury. Again, there were no reports of previous injuries. In fact, the appellate court upheld the trial court’s use of the fact that other people in the party had traversed the stairs without incident in making a determination | nregarding the risk posed by the steps. Conversely, in the present case, the evi*178dence reveals eight previous incidents in less than three years in the Rapides Regional ER wherein visitors were injured while trying to sit on rolling stools in the examination rooms. Accordingly, in the present case, the hospital had superior knowledge of the risk created by the rolling stools.
Speculation
Rapides Regional contends that the trial court erred in relying on its own speculation. This contention is based merely on an observation made by the trial court that “[t]he number of unreported or near missed incidences is unknown. Records of these would be unreported by their nature .... ” We do not consider this observation a “rebanee on speculation.” Where the court assessed the content of eight pre-injury reports of similar incidents with rolling stools in the hospital’s ER in less than three years, as well as several post-injury reports, and then provided a three page explanation of its findings, it would not be reasonable to conclude that the court “relied” on its own speculation in making factual determinations. This contention is also without merit.
Allocation of Fault
The allocation of fault among all negligent parties applies to “any claim for recovery of damages for injury, death, or loss asserted under any law or legal doctrine or theory of liability,” regardless of the basis of liability. La.Civ.Code art. 2323(B); Dupree v. City of New Orleans, 99-3651 (La.8/31/00), 765 So.2d 1002. The trier-of-fact is owed great deference in its allocation of fault. Even if the reviewing court would have decided the case differently, the trial court’s judgment should be affirmed unless manifestly erroneous or clearly wrong. Clement v. Frey, 11295-1119 c/w 95-1163 (La.1/16/96), 666 So.2d 607. In determining percentages of fault, the Louisiana Supreme Court has outlined five factors that may influence the degree of fault assigned: (1) whether the conduct resulted from inadvertence or involved an awareness of the danger; (2) how great a risk was created by the conduct; (3) the significance of what was sought by the conduct; (4) the capacities of the actor, whether superior or inferior; and (5) any extenuating circumstances that might require the actor to proceed in haste, without proper thought. Watson v. State Farm Fire & Casualty Ins. Co., 469 So.2d 967, 974 (La.1985).
After reviewing these factors in light of the entire record, and after giving appropriate deference to the trial court, we find that the trial court did not commit manifest error in assessing fault at fifty percent to each party.
CONCLUSION
Based upon the foregoing, the judgment of the trial court is affirmed. Costs of this appeal are assessed equally to Rapides Regional and Ms. Bullock.
AFFIRMED.
THIBODEAUX, C.J., concurs in part and dissents in part with written reasons.
AMY, J., dissents with written reasons.
SULLIVAN, J., dissents for the reasons assigned by Judge AMY.