Table 2

Three multivariate models to predict use of electronic prescribing: A) Parameters of physicians’ perceptions and intentions; B) Parameters of practice characteristics; C) Parameters of physician characteristics.

A) PHYSICIANS’ PERCEPTIONS AND INTENTIONS*PERCEIVED USEFULNESS + PERCEIVED EASE OF USE + SOCIAL INFLUENCE + BEHAVIOURAL INTENTION
ESTIMATE95% CIP VALUE
Intercept0.22−0.26 to 0.70.36
Perceived usefulness
  • Average score of usefulness−0.02−0.14 to 0.09.72
Perceived ease of use
  • MOXXI will be easy to use0.06−0.03 to 0.16.19
Social influence
  • Colleagues’ attitudes will be positive toward my use of MOXXI0.01−0.09 to 0.10.85
Behavioural intention
  • I will use MOXXI with most of my patients−0.03−0.11 to 0.05.50
B) PRACTICE CHARACTERISTICSPRACTICE VOLUME + CONTINUITY OF CARE + MEDICATION USE + PRACTICE SIZE
ESTIMATE95% CIP VALUE
Intercept0.20−0.17 to 0.57.28
Practice volume0.00−0.01 to 0.01.34
Continuity of care§−0.12−0.72 to 0.48.68
Average medication use||0.080.01 to 0.14.02
Practice size0.000.00 to 0.00.52
C) PHYSICIAN CHARACTERISTICS#AGE + SEX + INFORMATION-ACQUISITION STYLE + COMPUTER EXPERIENCE
ESTIMATE95% CIP VALUE
Intercept0.07−0.55 to 0.68.83
Practice experience
  • Graduation year−0.001−0.01 to 0.01.77
Sex**
  • Male0.03−0.07 to 0.14.53
Physician typology††
  • Pragmatist0.260.08 to 0.45.01
  • Seeker0.16−0.05 to 0.36.13
  • Receptive0.260.06 to 0.47.01
Computer experience
  • Hours per week of computer use0.010.005 to 0.02.001
  • MOXXI—medical office of the 21st century.

  • * R2 = 0.05; adjusted R2 = 0.02.

  • R2 = 0.12; adjusted R2 = 0.06.

  • Daily no. of patients seen based on the no. of patient visits during the 18 months before the study.

  • § Proportion of visits made to study physician for each patient in the practice in the 18 months before the study.

  • || No. of medications was counted for each patient in the 18 months before the study.

  • Unique patients that visited the study physician during the 18 months before study enrolment.

  • # R2 = 0.34; adjusted R2 = 0.27.

  • ** Female sex was reference category.

  • †† Traditionalist was reference category.