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Table 2 Hierarchical multiple regression of intentions to choose mastectomy or BCS on predictors from the theory of reasoned action (Model 1) and extended theory of planned behaviour (Model 2)

From: Factors influencing the surgery intentions and choices of women with early breast cancer: the predictive utility of an extended theory of planned behaviour

  R2 Adjusted R2 B Standard error B Beta T
Model 1: .696 .674     
  Direct attitudes    .801 .163 .605** 4.92
  Subjective norms    .541 .226 .294* 2.39
  Perceived behavioural control    .339 .272 .107 1.25
Model 2: .728 .695     
  Direct attitudes    .543 .199 .410** 2.73
  Subjective norms    .413 .280 .225 1.48
  Perceived behavioural control    .313 .270 .099 1.16
  Anticipated regret    -.555 .255 -.238* −2.18
  Descriptive norms    -.102 .196 .062 .520
  1. *p<.05, **p<.01.