In Molitor v. Jaimeyfield, 251 Ill. App. 3d 725, 190 Ill. Dec. 933, 622 N.E.2d 1250 (1993), the Court held that a chiropractor's trial testimony that the plaintiff would most likely continue to experience pain and to require treatment was admissible even though the chiropractor last examined the plaintiff 18 months before trial. Molitor, 251 Ill. App. 3d at 729. The Court concluded that the date of the last examination went only to the weight of the evidence, not the admissibility. Molitor, 251 Ill. App. 3d at 729. In Molitor, the Court further noted that an expert's opinion need not be based on absolute certainty, but on a reasonable degree of medical certainty. Molitor, 251 Ill. App. 3d at 729.