Table 4.
Top 50 research domains that emerged from the exploratory factor analysis of the content of all abstracts.
| Number | Name | Keywords | Eigen value | Cases, n (%) |
| 1 | Classification; feature selection | Classification; feature; proposed; features; selection; breast; performance; algorithm; diagnosis; classifier; paper; accuracy; machine | 4.71 | 6104 (58.09) |
| 2 | Disease-free survival | Survival; free; recurrence; follow; disease; local | 2.94 | 3413 (52.69) |
| 3 | Medical; processing | Medical; processing; information; system; systems | 1.85 | 2218 (42.31) |
| 4 | Blood loss; hospital stay | Loss; blood; stay; operative; complications; length; hospital; min; postoperative; conversion; perioperative; complication; safe; intraoperative; feasible | 17.16 | 5050 (41.13) |
| 5 | Prostate; assisted radical | Prostatectomy; prostate; radical; RARPa; localized; men; assisted; radical prostatectomy; robot; Gleason; RALPb; PSAc | 3.97 | 4050 (41.04) |
| 6 | Gy; radiation dose | Gy; dose; SBRTd; radiation; radiotherapy; therapy; local; body; treated | 5.18 | 2495 (37.16) |
| 7 | Predict; prediction | Predict; prediction; predictive; models; predicting; prognostic; variables; validation | 2.34 | 2562 (36.71) |
| 8 | Machine learning | Learning; machine; accuracy | 2.27 | 2398 (36.68) |
| 9 | Cohort; risk | Cohort; risk; outcome; retrospective | 1.44 | 1759 (36.54) |
| 10 | PSA; Gleason | PSA; Gleason; specific; biopsy; serum; prostate | 1.38 | 1970 (34.04) |
| 11 | Early stage | Early; cervical; stage; hysterectomy | 1.48 | 1700 (33.47) |
| 12 | Evaluate | Evaluate; evaluated; according | 1.37 | 1185 (28.16) |
| 13 | Training set | Training; set; test; sets; validation | 1.60 | 1573 (27.74) |
| 14 | Adjuvant chemotherapy | Chemotherapy; adjuvant; therapy; advanced | 1.51 | 1323 (27.34) |
| 15 | Tumor | Tumor; tumors; size | 1.46 | 1253 (27.12) |
| 16 | Morbidity and mortality | Mortality; morbidity; rate | 1.36 | 1194 (26.69) |
| 17 | Staging for endometrial; hysterectomy | Endometrial; hysterectomy; laparotomy; staging; lymphadenectomy; pelvic; cervical; laparoscopy; women | 3.09 | 1759 (25.26) |
| 18 | Sensitivity and specificity | Specificity; sensitivity; serum; detection; diagnostic | 2.17 | 1405 (23.74) |
| 19 | Plans; planning | Plans; planning; target; mm; volume; dose; average | 1.53 | 1267 (23.57) |
| 20 | Cystectomy; bladder | Cystectomy; bladder; RARCe; urinary; radical | 2.83 | 1235 (22.53) |
| 21 | Case | Cases; case | 1.26 | 913 (22.50) |
| 22 | Artificial neural | Neural; artificial; network; ANNf; networks | 3.32 | 2060 (22.17) |
| 23 | Image | Images; image; imaging; deep; CTg; MRIh | 2.59 | 1363 (21.77) |
| 24 | Quality of life | Life; quality; health; sexual | 2.09 | 1148 (21.55) |
| 25 | Lymph node | Lymph; node; dissection; nodes; pelvic; lymphadenectomy | 2.47 | 1909 (21.24) |
| 26 | Safe and feasible | Safe; feasible; procedure | 1.25 | 1020 (20.39) |
| 27 | Decision support | Support; SVMi; decision; classifier | 1.45 | 1062 (19.86) |
| 28 | Rectal resection | Rectal; colorectal; resection; conversion | 1.57 | 926 (19.16) |
| 29 | Oncological and functional; sexual function | Functional; function; sexual; oncological | 1.31 | 903 (19.10) |
| 30 | Gene expression | Gene; expression; genes; molecular; protein; samples; mutations | 3.24 | 1369 (18.90) |
| 31 | Purpose | Purpose; materials | 1.51 | 815 (18.71) |
| 32 | Pathology; reports | Pathology; reports; processing; report | 1.41 | 824 (18.54) |
| 33 | Women diagnosed | Diagnosed; screening; women | 1.29 | 728 (17.64) |
| 34 | Transoral; TORSj | Transoral; tors; oropharyngeal; neck; head; HPVk; carcinoma | 3.48 | 1183 (16.48) |
| 35 | Margin; PTl | Margin; PT; margins; pathologic; Gleason; RALP | 1.80 | 884 (16.15) |
| 36 | Cost | Cost; costs; care | 1.93 | 712 (16.06) |
| 37 | Surgeon experience | Experience; surgeons; surgeon | 1.70 | 690 (15.22) |
| 38 | Small cell lung | Lung; small | 1.29 | 628 (14.91) |
| 39 | Body mass | Mass; index; body | 1.89 | 823 (14.91) |
| 40 | Multi drug | Multiple; multi; drug | 1.56 | 588 (14.68) |
| 41 | Operating curve | Curve; operating; AUCm | 1.68 | 649 (12.52) |
| 42 | Benign and malignant | Malignant; benign; lesions | 1.59 | 579 (11.14) |
| 43 | Normal tissue | Tissue; normal | 1.40 | 460 (11.11) |
| 44 | Imaging (MRI) | MRI; imaging | 1.39 | 435 (10.63) |
| 45 | Metastases | Metastases; metastasis; liver | 1.39 | 416 (9.51) |
| 46 | Renal | Renal; partial; sparing | 1.74 | 376 (8.27) |
| 47 | HPV-negative | Negative; HPV | 1.33 | 312 (8.07) |
| 48 | Trials | Trials | 1.34 | 239 (6.72) |
| 49 | Biomarkers | Biomarkers | 1.25 | 171 (4.81) |
| 50 | Gastrectomy for gastric | Gastric; gastrectomy | 1.77 | 205 (3.63) |
aRARP: robotic-assisted radical prostatectomy.
bRALP: robot assisted laparoscopic prostatectomy.
cPSA: prostate specific antigen.
dSBRT: stereotactic body radiation therapy.
eRARC: remittance advice remark code.
fANN: artificial neural network.
gCT: computed tomography.
hMRI: magnetic resonance imaging.
iSVM: support vector machine.
jTORS: transoral robotic surgery.
kHPV: human papilloma virus.
lPT: prothrombin time.
mAUC: area under the curve.