From: Identifying observational studies of surgical interventions in MEDLINE and EMBASE
Search Term | Reference Standard retrieved (N = 191) | Total retrieved (N = 1521) | Sensitivity | Precision | Specificity |
---|---|---|---|---|---|
Controlled Thesaurus Terms | |||||
Case report/ | 1 | 348 | 0.5 | 0.3 | 73.9 |
Clinical trial/ | 23 | 131 | 12.0 | 17.6 | 91.9 |
Cohort analysis/ | 3 | 9 | 1.6 | 33.3 | 99.5 |
Comparative study/ | 13 | 39 | 6.8 | 33.3 | 98.0 |
Controlled study/ | 79 | 309 | 41.4 | 25.6 | 82.7 |
Follow-up study/ | 45 | 212 | 23.6 | 21.2 | 87.4 |
Major clinical study/ | 106 | 308 | 55.5 | 34.4 | 84.8 |
Prospective study/ | 22 | 74 | 11.5 | 29.7 | 96.1 |
Retrospective study/ | 29 | 108 | 15.2 | 26.8 | 94.1 |
Treatment outcome/ | 88 | 447 | 46.1 | 19.7 | 73.0 |
Textwords (.tw) | |||||
baseline | 16 | 47 | 8.4 | 34.0 | 97.7 |
case control$ | 3 | 9 | 1.6 | 33.3 | 99.5 |
case series | 27 | 122 | 14.1 | 22.1 | 92.9 |
cases | 38 | 201 | 19.9 | 18.9 | 87.7 |
chang$ | 51 | 297 | 26.7 | 17.2 | 81.5 |
cohort | 8 | 19 | 4.2 | 42.1 | 99.2 |
compar$ or compara$ | 90 | 287 | 47.1 | 31.4 | 85.2 |
consecutive$ | 51 | 142 | 26.7 | 35.9 | 93.2 |
evaluat$ | 96 | 425 | 50.3 | 22.6 | 75.3 |
follow$ | 50 | 259 | 26.2 | 19.3 | 84.3 |
non compara$ or noncompara$ | 13 | 78 | 6.8 | 16.7 | 95.1 |
non random$ or nonrandom$ | 19 | 46 | 9.9 | 41.3 | 98.0 |
observational | 3 | 20 | 1.6 | 15.0 | 98.7 |
postoperat$ or post operat$ | 91 | 494 | 47.6 | 18.4 | 69.7 |
preoperat$ or pre operat$ | 101 | 418 | 52.9 | 24.2 | 76.2 |
prospective$ | 56 | 195 | 29.3 | 28.7 | 89.5 |
retrospective$ | 61 | 223 | 31.9 | 27.3 | 87.8 |
reviewed | 20 | 66 | 10.5 | 30.3 | 96.5 |
EMTREE and/or Textword (.mp) | |||||
cohort$ | 8 | 21 | 4.2 | 38.1 | 99.0 |
compare$ or compara$ | 90 | 297 | 47.1 | 30.3 | 84.4 |
follow$ | 61 | 325 | 31.9 | 18.8 | 80.1 |
prospective$ | 57 | 200 | 29.8 | 28.5 | 89.2 |
retrospective$ | 64 | 233 | 33.5 | 27.5 | 87.3 |
postoperat$ or post operat$ | 123 | 827 | 64.4 | 14.9 | 47.1 |
preoperat$ or pre operat$ | 106 | 491 | 55.5 | 21.6 | 71.1 |