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Br J Ophthalmol 84:1041-1044 doi:10.1136/bjo.84.9.1041
  • Original Article
    • Clinical science

Pain perception with pH buffered peribulbar anaesthesia: a pilot study

Table 3

Comparison of injection pain mean scores in the two treatment groups

Treatment group No of patients Mean injection pain score (SD) Mean difference Significance tests p values
t test Non- parametric Mann- Whitney test Multifactor ANOVA with adjustment for pain threshold and injector
A 31 4.84 (2.49) −0.13 p=0.86 p=0.77 p=0.85
B 29 4.97 (3.02)
Totals 60 4.90 (2.74)

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