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. 2010 Spring;24(1):2–18. doi: 10.7899/1042-5055-24.1.2

Table 8.

Mean scores and standard deviations obtained in pretest and final test (14–16 weeks) for four groups of practitioners: all those exposed to a radiology workshop (IG1, IG2, and IG3) and control group (CG)

Groupsa Pretest Mean (SD) Final test Mean (SD) Change Mean (SD) 95% CI p Value
IG 1 (n = 20) 5.200 (1.28) 4.900 (1.55) 0.300 (1.45) −0.34 to 0.94
Percent change −5.8%
IG 2 (n = 14) 4.857 (0.95) 5.500 (1.56) 0.643 (1.55) −0.17 to 1.45 p = .348
Percent change +13.2% F = 1.117
IG 3 (n = 17) 4.588 (1.46) 4.647 (1.37) 0.059 (1.71) −0.75 to 0.87
Percent change +1.3%
CG (n = 24) 4.542 (1.07) 4.791 (1.38) 0.25 (0.89) −0.11 to 0.61
Percent change 5.5%
a

Includes respondents who completed both pretest and final test. IG, intervention groups (IG1, subgroup unexposed to reminder but undergoing a posttest at midpoint; IG2. subgroup exposed to reminder and undergoing a posttest at midpoint; IG3, subgroup unexposed to reminder and receiving no posttest); CG, control group; n, number of participants completing the competency tests; SD, standard deviation. A higher score at the final test indicates performance improved over time.