Table 2: Description of Direct Comparison Studies Included in Clinical Example and Risk of Withdrawing Due to Adverse Events

Study Treatment Number of Subjects who Withdrew Due to Adverse events Number of Subjects in Treatment Arm Risk of Withdrawal Due to Adverse Events Risk Difference (95% Confidence Interval)
1 [5] Gabapentin 15 115 13.00% -6.7% (-14% to 0.9%)
1 [5] Placebo 7 111 6.31%
2 [6] Nortriptyline 5 38 13.16% -5.66% (-19% to 7%)
2 [6] Placebo 3 40 7.50%
3 [7] Nortriptyline 1 38 2.63% 2.63% (-2.4% to 7%)
3 [7] Gabapentin 0 38 0.00%