Table 2 Grading of Recommendations, Assessment, Development, and Evaluations
No of studies | Certainty assessment | Effect | Certainty | ||||||
|---|---|---|---|---|---|---|---|---|---|
Study design | Risk of bias | Inconsistency | Indirectness | Imprecision | Other considerations | No of individuals | Rate (95% CI) | ||
surgical duration | |||||||||
8 | observational studies | not serious | not serious | not serious | not serious | none | 523 | -28.06 to 13.67 | ⨁⨁⨁⨁ High |
intraoperative blood loss | |||||||||
8 | observational studies | not serious | not serious | not serious | not serious | none | 523 | -40.62 to 73.06 | ⨁⨁⨁⨁ High |
graft fusion time | |||||||||
4 | observational studies | not serious | not seriousa | not serious | Seriousb | none | 231 | -0.88 to 2.81 | ⨁⨁⨁◯ Moderate |
ASIA(E) | |||||||||
5 | observational studies | not serious | not serious | not serious | not serious | none | 288 | 0.97 to 1.09 | ⨁⨁⨁⨁ High |
VAS score | |||||||||
7 | observational studies | not serious | Seriousb | not serious | not serious | none | 487 | -5.23 to -3.24 | ⨁⨁⨁◯ Moderate |
lumbar pain score | |||||||||
3 | observational studies | not serious | not serious | not serious | not serious | none | 155 | -45.54 to -34.96 | ⨁⨁⨁⨁ High |
post-graft kyphotic angle | |||||||||
4 | observational studies | not serious | Seriousc | not serious | not serious | none | 303 | -36.50 to -6.89 | ⨁⨁⨁◯ Moderate |
postoperative complications | |||||||||
6 | observational studies | not serious | Seriousb | not serious | not serious | none | 429 | ⨁⨁⨁◯ Moderate | |