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. 2023 May 10;2023(5):CD014682. doi: 10.1002/14651858.CD014682.pub2

10. Moderate pain summary of findings.

Estimates of effects, credible intervals, and certainty of the evidence for moderate pain relief in people with chronic pain
Bayesian network meta‐analysis summary of findings table
Patient or population: people with chronic pain
Interventions: mirtazapine, duloxetine, milnacipran. all doses were combined for each antidepressant.
Comparator (reference): placebo
Outcome: moderate pain relief (defined as 30% reduction in pain intensity from baseline to post‐intervention; measured on a range of scales including 0‐10 VAS, 0‐100 VAS, and hort‐form McGill Pain Questionnaire
Direction: Higher is better (i.e. more people reporting moderate pain relief)
Total studies: 40
Total participants: 14,208
Relative effect
(OR and 95% CI)
Anticipated absolute effect (event rate)* Certainty of the evidence (CINeMA) Ranking**
(2.5% to 97.5% credible interval)
Interpretation of findings
With placebo With intervention Difference
Mirtazapine
RCTs: 2
Participants: 462
1.92
(1.45 to 2.39)
70/224
313 per 1000
112/238
466 per 1000
154 more per 1000 Lowe 7
(3 to 13)
Equivalent NNTB is 6.5
Duloxetine
RCTs: 24
Participants: 7833
1.79
(1.67 to 1.91)
1324/3271
405 per 1000
2469/4562
549 per 1000
144 more per 1000 Moderatea 7
(4 to 11)
Equivalent NNTB is 6.9
Milnacipran
RCTs: 7
Participants: 3056
1.7
(1.48 to 1.92)
347/1128
308 per 1000
825/1928
430 per 1000
123 more per 1000 Moderatea 8
(4 to 12)
Equivalent NNTB is 8.1
Esreboxetine
RCTs: 2
Participants: 1374
1.65
(1.32 to 1.98)
107/409
262 per 1000
356/965
369 per 1000
107 more per 1000 Lowa,e 9
(4 to 13)
Equivalent NNTB is 9.3
Network meta‐analysis‐summary of findings table definitions
* Anticipated absolute effect. Anticipated absolute effect compares two risks by calculating the difference between the risk of the intervention group with the risk of the control group.
** Mean rank and credible intervals are presented.
CI: confidence interval; CINeMA: Confidence in Network Meta‐Analysis; NNTB: number needed to treat for an additional beneficial outcome; OR: odds ratio; RCT: randomised controlled trial; VAS: visual analogue scale
The number of participants for each antidepressant reflects the total number of participants taking the antidepressant or placebo from the studies in the network meta‐analysis.
CINeMA grades of confidence in the evidence
High: further research is unlikely to change our confidence in the estimate of effect.
Moderate: further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low: further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low: we are very uncertain about the estimate.

aDowngraded due to within‐study bias.
bDowngraded due to imprecision in the estimate.
cDowngraded due to heterogeneity in the estimate.
dDowngraded due to incoherence in the network.
eDowngraded due to a small number of trials and participants; we cannot draw reliable conclusions.