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Table 1 Evidence table

From: 3D-printing techniques in a medical setting: a systematic literature review

Number of studies Custom implant Model for implant shaping Model for patient selection Model for surgery planning Mold for prosthetic Surgical guides Total
30 9 2 89 4 136 270
OR/treatment time
Not mentioned 11 4 2 37 3 68 125
Time reduction 17 (4) 5 (1) 0 48 (13) 1 53 (28) 123 (46)
No time difference 1 (1) 0 0 3 (2) 0 8 (1) 12 (4)
Time increase 1 0 0 2 (1) 0 7 (5) 10 (6)
Accuracy of printed part
Not mentioned 3 1 1 4 0 16 28
Good/better accuracy 26 8 1 80 (4) 4 87 (13) 205 (17)
Average accuracy 1 0 0 6 (1) 0 23 (3) 30 (4)
Bad accuracy 0 0 0 0 0 10 (6) 10 (6)
Radiation exposure
Not mentioned 30 7 2 77 4 121 241
Less radiation 0 0 0 8 (1) 0 9 17 (1)
equal radiation 0 0 0 1 0 2 3
Increased radiation 0 2 0 3 0 4 9
Clinical outcome
Not mentioned 1 0 2 10 0 15 28
Improved 25 (2) 9 (2) 0 73 (8) 4 85 (15) 195 (27)
Equal 4 0 0 7 (1) 0 30 (7) 41 (8)
Negative impact 0 0 0 0 0 7 (2) 7 (2)
Cost
Not mentioned 16 7 1 52 3 94 173
Cheaper 0 0 0 4 1 2 (1) 7 (1)
Equally expensive 0 0 0 1 0 1 2
More expensive 14 (4) 2 (2) 1 32 (21) 0 39 (19) 88 (46)
Cost effectiveness
Cost-effective 1 0 0 8 1 10 19
Neutral 0 0 0 2 0 1 3
Not cost-effective 0 0 0 1 0 6 7
  1. (x) Number of studies quantifying the data with numbers/statistics