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Table 3 Numbers needed to treat based on improvement of at least 1 h of crying

From: The effect of chiropractic care on infantile colic: results from a single-blind randomised controlled trial

  Improvement of at least one hour of crying Total NNT (CI)
  No Yes
Treatment group 36 (37.5) 60 (62.5) 96 (100.0) 6.5 (3.5–101.9)
Control group 47 (52.8) 42 (47.2) 89 (100.0)
Total 83 (44.9) 102 (55.1) 185 (100.0)  
  1. Risk of improvement for control (p0): 0.472. Risk of improvement for intervention (p1): 0.625. Risk difference (p1 - p0): 0.153. Newcombe Method 10 95% CI: 0.010–0.288