Table 3 Correlations between study participants’ perceived facilitators of e-book and self-perceived barriers to CPD

Lack of free time

 1st issue

0.047 (-0.186 ~ 0.281)

0.297 (0.074 ~ 0.520)

-0.031 (-0.266 ~ 0.202)

-0.171 (-0.407 ~ 0.063)

-0.143 (-0.374 ~ 0.088)

 2nd issue

0.305 (0.134 ~ 0.475)

0.005 (-0.171 ~ 0.181)

-0.035 (-0.212 ~ 0.140)

0.020 (-0.156 ~ 0.197)

-0.013 (-0.190 ~ 0.162)

 3rd issue

0.328 (0.148 ~ 0.507)

0.038 (-0.139 ~ 0.215)

0.009 (-0.165 ~ 0.187)

-0.287 (-0.480 ~ -0.095)

-0.022 (-0.199 ~ 0.155)

 4th issue

0.005 (-0.180 ~ 0.190)

0.131 (-0.050 ~ 0.317)

0.056 (-0.129 ~ 0.242)

0.011 (-0.174 ~ 0.197)

-0.007 (-0.192 ~ 0.177)

Courses only offered in English

 1st issue

-0.001 (-0.234 ~ 0.234)

0.294 (0.073 ~ 0.516)

0.046 (-0.187 ~ 0.281)

-0.192 (-0.416 ~ 0.031)

0 (-0.234 ~ 0.234)

 2nd issue

-0.183 (-0.365 ~ -0.001)

0.319 (0.157 ~ 0.481)

-0.019 (-0.196 ~ 0.156)

-0.133 (-0.303 ~ 0.035)

-0.177 (-0.349 ~ -0.005)

 3rd issue

0.099 (-0.075 ~ 0.273)

0.225 (0.055 ~ 0.396)

0.037 (-0.140 ~ 0.215)

-0.157 (-0.330 ~ 0.015)

-0.103 (-0.278 ~ 0.072)

 4th issue

0.010 (-0.174 ~ 0.195)

0.269 (0.096 ~ 0.442)

0.153 (-0.034 ~ 0.342)

0.024 (-0.163 ~ 0.211)

-0.269 (-0.441 ~ -0.097)

Course length is too long to read

 1st issue

0.089 (-0.148 ~ 0.327)

-0.078 (-0.310 ~ 0.153)

0.199 (-0.029 ~ 0.429)

-0.018 (-0.255 ~ 0.218)

-0.120 (-0.353 ~ 0.112)

 2nd issue

0.159 (-0.022 ~ 0.341)

-0.060 (-0.235 ~ 0.114)

0.145 (-0.026 ~ 0.317)

-0.043 (-0.223 ~ 0.136)

0.163 (-0.009 ~ 0.336)

 3rd issue

0.059 (-0.121 ~ 0.241)

0.033 (-0.145 ~ 0.211)

0.251 (0.083 ~ 0.419)

0.026 (-0.148 ~ 0.201)

0.050 (-0.125 ~ 0.226)

 4th issue

0.008 (-0.176 ~ 0.194)

-0.141 (-0.322 ~ 0.038)

0.065 (-0.117 ~ 0.248)

0.136 (-0.041 ~ 0.314)

0.137 (-0.042 ~ 0.317)

Course content is too complicated to read

 1st issue

0.035 (-0.196 ~ 0.268)

0.017 (-0.216 ~ 0.251)

0.041 (-0.193 ~ 0.275)

0.266 (-0.018 ~ 0.552)

0.240 (0.011 ~ 0.470)

 2nd issue

-0.035 (-0.214 ~ 0.142)

0.110 (-0.060 ~ 0.281)

-0.116 (-0.288 ~ 0.055)

0.159 (-0.037 ~ 0.355)

0.199 (0.020 ~ 0.379)

 3rd issue

0.0006 (-0.176 ~ 0.178)

0.065 (-0.109 ~ 0.240)

0.250 (0.070 ~ 0.431)

0.191 (-0.010 ~ 0.393)

0.064 (-0.114 ~ 0.243)

 4th issue

-0.027 (-0.214 ~ 0.158)

0.205 (0.027 ~ 0.383)

0.097 (-0.089 ~ 0.289)

0.179 (-0.019 ~ 0.378)

0.185 (-0.002 ~ 0.373)

Courses not related to clinical fields

 1st issue

-0.221 (-0.456 ~ 0.015)

0.200 (-0.026 ~ 0.428)

-0.271 (-0.496 ~ -0.046)

-0.044 (-0.275 ~ 0.186)

0.145 (-0.087 ~ 0.377)

 2nd issue

0.094 (-0.081 ~ 0.270)

-0.063 (-0.240 ~ 0.113)

0.098 (-0.077 ~ 0.275)

-0.062 (-0.238 ~ 0.114)

0.084 (-0.091 ~ 0.260)

 3rd issue

0.079 (-0.094 ~ 0.252)

-0.022 (-0.200 ~ 0.155)

-0.016 (-0.193 ~ 0.160)

0.158 (-0.035 ~ 0.351)

0.183 (0.003 ~ 0.362)

 4th issue

0.030 (-0.153 ~ 0.213)

-0.027 (-0.213 ~ 0.158)

-0.050 (-0.233 ~ 0.133)

-0.055 (-0.235 ~ 0.124)

0.348 (0.152 ~ 0.543)