The phrase "a retrospective comparison" is correct and usable in written English.
It can be used when discussing an analysis or evaluation of past events or data in relation to each other.
Example: "The study conducted a retrospective comparison of patient outcomes over the last decade."
Alternatives: "a historical comparison" or "a backdated analysis".
Inpatient cancer rehabilitation: a retrospective comparison of transfer back to acute care between patients with neoplasm and other rehabilitation patients.
See Pranav Rajpurkar et al., Deep Learning for Chest Radiograph Diagnosis: A Retrospective Comparison of the CheXNeXt Algorithm to Practicing Radiologists, Pub.
Wang, F. L. et al. Effects of age, breast density and volume on breast cancer diagnosis: a retrospective comparison of sensitivity of mammography and ultrasonography in China's rural areas.
Study design: We made a retrospective comparison of deliveries that occurred during two 3-year periods (1993 1995, and 1997 1999), before and after the introduction of sufentanil into our protocol for epidural anaesthesia.
Wu et al. [22] published a retrospective comparison of reaming 1 or >2 mm greater than the previous nail.
It needs to be noted that the level of evidence of these studies is limited since they describe only a retrospective comparison of the two procedures.
A retrospective comparison study comparing 73 patients who underwent 'laparoscopic hysterectomy and uterosacral plication' against 70 patients who underwent 'vaginal hysterectomy and McCall culdoplasty'.
A retrospective comparison of the use of OSTEOSET®-T with debridement versus debridement alone has supported the use of OSTEOSET®-T in single-stage surgery in the treatment of adult osteomyelitis.
In a retrospective comparison of percutaneously removed covered stents versus balloon dilatation in 66 patients, the primary patency of stents was 87%% at 3 years with a shorter catheter indwelling period.
Our study was a retrospective comparison of the evaluators' subjective ratings of applicants during these 2 consecutive years: 2004 2005, 'year 1,' prior to our program's participation in ERAS, and 2005 2006, 'year 2,' our program's first year participating in ERAS.
On the other hand, in a retrospective comparison of four different fixation methods, Tsai et al. [19] found no significant difference in the amount of blood loss, duration of surgery, complications, or clinical results but identified an 11-fold complication rate in the group of antegrade nailing with cannulated screw fixation of the neck fracture compared with the DHS with LCDCP group.
