Table 4. Multivariate logistic regression analyse of the influence of the independent variables tooth type (1 = molar / 0 = other), vitality test (1 = positive / 0 = negative), pulpitis (1 = present / 0 = absent), acute apical periodontitis (1 = present / 0 = absent), previous NSAIDs (1 = present / 0 = absent), root canal instrumentation technique (RCIT) (1 = hand files / 0 = rotary files) and root canal obturation technique (RCOT) (1 = lateral compaction / 0 = continuous wave of compaction) on the dependent variable “pain experienced during root canal treatment” (1 = absent / 0 = present).