Table 5. Frequency of studies estimating prognostic value of tissue miRNA expression in pancreatic cancer.
| miR | N | R | miR | N | R | miR | N | R | miR | N | R | miR | N | R |
| let-7a-3 | 1 | 27 | 92b-3p | 1 | 75 | 155 | 3 | 14,50,51 | 301a-3p | 1 | 129 | 509-5p | 1 | 151 |
| let-7g* | 1 | 28 | 93 | 1 | 38 | 181c | 1 | 100 | 301b | 1 | 38 | 539 | 1 | 152 |
| let-7g | 1 | 29 | 96-5p | 1 | 76 | 182-5p | 1 | 76 | 323-3p | 1 | 130 | 545 | 1 | 153 |
| 1 | 1 | 30 | 100 | 2 | 50,77 | 183 | 1 | 101 | 326 | 1 | 71 | 548an | 1 | 154 |
| 7-5p | 1 | 31 | 101 | 1 | 78 | 191 | 1 | 102 | 328 | 1 | 68 | 590-5p | 1 | 38 |
| 9-5p | 1 | 32 | 103 | 1 | 79 | 192 | 2 | 33,103 | 329 | 1 | 131 | 613 | 1 | 155 |
| 9 | 1 | 33 | 107 | 1 | 80 | 195 | 1 | 104 | 337 | 1 | 132 | 615-5p | 1 | 156 |
| 10a-5p | 1 | 34 | 124 | 1 | 81 | 196a-2 | 1 | 105 | 342-3p | 2 | 53,133 | 661 | 1 | 157 |
| 10b | 4 | 35-38 | 125a-3p | 1 | 29 | 196b | 2 | 59,106 | 361-3p | 1 | 134 | 663 | 1 | 158 |
| 15b | 1 | 38 | 125a | 1 | 68 | 198 | 2 | 55,107 | 367 | 1 | 135 | 664a | 1 | 68 |
| 17-5p | 3 | 39-41 | 125b | 1 | 77 | 199a-3p | 1 | 53 | 371-5p | 1 | 136 | 664 | 1 | 159 |
| 19a | 1 | 42 | 126 | 3 | 27,68,82 | 200c-3p | 1 | 108 | 374b-5p | 1 | 137 | 675-5p | 1 | 160 |
| 21 | 19 | 5,43-60 | 130b | 1 | 83 | 200c | 3 | 109-111 | 375 | 1 | 50 | 675 | 1 | 28 |
| 23a | 4 | 50,53,61,62 | 132 | 2 | 33,84 | 203 | 4 | 59,112-114 | 376b | 1 | 68 | 708-5p | 1 | 161 |
| 24-1 | 1 | 27 | 133a-1 | 1 | 27 | 204-5p | 1 | 115 | 376c | 1 | 68 | 744 | 1 | 162 |
| 25-3p | 1 | 63 | 133a | 2 | 33,85 | 204 | 1 | 95 | 377 | 1 | 138 | 891b | 1 | 163 |
| 26a | 1 | 64 | 135b-5p | 2 | 86,87 | 205-5p | 1 | 29 | 410-3p | 1 | 139 | 940 | 1 | 164 |
| 27a | 1 | 53 | 135b | 1 | 88 | 205 | 2 | 19,116 | 421 | 1 | 27 | 1181 | 1 | 165 |
| 29a-5p | 1 | 29 | 137 | 1 | 89 | 211 | 1 | 117 | 424 | 2 | 82,114 | 1246 | 1 | 166 |
| 29a | 1 | 65 | 139-5p | 1 | 90 | 212-3p | 1 | 29 | 429 | 1 | 140 | 1247 | 1 | 167 |
| 29b-2-5p | 1 | 66 | 139 | 1 | 91 | 212 | 2 | 28,118 | 448 | 1 | 141 | 1266 | 1 | 168 |
| 29b-3p | 1 | 67 | 140 | 1 | 33 | 214 | 1 | 30 | 450b-5p | 1 | 28 | 1293 | 1 | 114 |
| 29b | 2 | 33,68 | 141 | 2 | 92,93 | 216b-5p | 1 | 119 | 451 | 1 | 142 | 1301 | 1 | 68 |
| 29c | 4 | 33,46,69,70 | 142-3p | 2 | 53,94 | 216b | 1 | 120 | 454 | 1 | 68 | 3157 | 1 | 27 |
| 30a | 1 | 71 | 142-5p | 1 | 95 | 217 | 1 | 50 | 483-3p | 1 | 143 | 3613 | 1 | 68 |
| 30b | 1 | 72 | 143 | 1 | 50 | 218 | 3 | 121-123 | 491 | 1 | 33 | 3656 | 1 | 169 |
| 30d | 1 | 46 | 146a | 1 | 28 | 219 | 1 | 71 | 494 | 3 | 144-146 | 4521 | 1 | 27 |
| 30e | 1 | 27 | 148a* | 1 | 28 | 221-3p | 1 | 124 | 495 | 1 | 147 | 4709 | 1 | 27 |
| 31 | 2 | 50,54 | 148a | 1 | 50 | 221 | 4 | 46,50,125,126 | 497 | 1 | 148 | 5091 | 1 | 27 |
| 34a-5p | 2 | 29,73 | 148b | 1 | 96 | 222 | 3 | 28,126,127 | 501-3p | 1 | 149 | |||
| 34a | 1 | 46 | 150 | 1 | 97 | 223 | 1 | 128 | 501 | 1 | 27 | |||
| 34b | 1 | 74 | 153 | 2 | 98,99 | 224 | 2 | 46,71 | 506 | 1 | 150 |
Highlighted studies were included in the present meta-analysis; N: Number of studies estimating prognostic value; R: References.