A decision matrix evaluates and prioritizes a list of options and is a decision-making tool. SCI . Authors of accepted manuscripts give the peer review process a much higher rating (4) than authors of rejected manuscripts (2.2). David Dunson's analysis revealed that intercourse two days before ovulation resulted in pregnancy 29 percent of the time for 35-to-39-year-old women, compared with about 42 percent for 27-to-29 . //-->