Table 4

Risk of side effects with latanoprost and timolol

Side effectsNo of trialsCrude event rateRR (95% CI)RD (95% CI)NNH (95% CI)
LatanoprostTimolol
Withdrawals due to adverse effects29/27714/2850.70 (0.30, 1.66)−0.02 (−0.05, 0.16)NA
Hyperaemia651/58620/5032.20 (1.33, 3.65) 0.05 (0.02, 0.07) 21 (14, 42)
Conjunctivitis37/4195/3200.80 (0.25, 2.53)0.006 (−0.001, 0.02)NA
Increased pigmentation421/4780/387 8.01 (1.87, 34.30) 0.03 (0.01, 0.04) 36 (22, 91)
Hypotension10/149 2/1450.19 (0.01, 4.02)−0.01 (−0.04, 0.01)NA
Bradycardia10/87 2/910.21 (0.01, 4.29)−0.02 (−0.06, 0.02)NA
  • RR = relative risk; RD = risk difference or attribute risk; NNH = number needed to harm; CI = confidence interval.

  • For trials with event rate of zero, 0.5 was added to each cell of the individual 2 × 2 table to calculate RR, RD, or NNH.

  • p⩽0.05,

  • p⩽0.01.