Fig. 1
The retrieval of Web of Science citations from HPE journals and their enhancement with Altmetric Explorer data, usage counts, and notation of their public accessibility (*The public accessibility of all citations was determined by the author team by hand. †Data were not available for the Journal of Continuing Education in Health Professions (JCEHP) and therefore its 109 citations were removed prior to analysis)
Table 1
Descriptive and summary statistics of study sample (n = 2,486)
|
Citations, median (IQR) |
3 (5) |
|
Access counts, mean (SD) |
881.5 (580.7) |
|
JIF, mean (SD) |
2.3 (1.0) |
|
Publicly accessible, % (#) |
57.7 (1,434) |
|
References in article, mean (SD) |
33.0 (19.8) |
|
Mendeley, mean (SD) |
20.8 (27.8) |
|
Tweets, mean (SD) |
6.2 (11.9) |
|
News outlets, mean (SD) |
0.07 (0.5) |
|
Blog activity, mean (SD) |
0.06 (0.6) |
|
Publication year, % (#) | |
|
2013 |
34.6 (861) |
|
2014 |
32.2 (800) |
|
2015 |
33.2 (825) |
SD standard deviation, IQR interquartile range
Table 2
Citation negative binomial model results
|
Coefficient |
IRR |
95% IRR CI |
|---|---|---|
|
(Intercept) *** |
0.28 |
0.23, 0.35 |
|
Publicly accessible * |
0.81 |
0.67, 0.98 |
|
References *** |
1.00 |
1.00, 1.01 |
|
Bloggers * |
1.13 |
1.01, 1.25 |
|
Tweets *** |
1.01 |
1.00, 1.01 |
|
News outlets |
0.98 |
0.93, 1.04 |
|
|
0.97 |
0.92, 1.02 |
|
Mendeley *** |
1.01 |
1.00, 1.01 |
|
Journal impact factor *** |
1.21 |
1.13, 1.30 |
|
Time (in weeks) *** |
1.01 |
1.00, 1.01 |
|
Publicly accessible × JIF ** |
1.12 |
1.04, 1.21 |
IRR incident rate ratio, CI confidence interval
*p-value <0.05, **p-value <0.01, ***p-value <0.001
Table 3
Access count linear regression model results
|
Coefficient |
Estimate |
95% CI |
|---|---|---|
|
(Intercept) *** |
455.73 |
322.79, 588.67 |
|
Publicly accessible ** |
169.62 |
49.03, 290.19 |
|
References * |
−1.52 |
−2.72, −0.32 |
|
Bloggers * |
−86.51 |
−166.12, −6.90 |
|
Tweets |
0.89 |
−1.43, 3.21 |
|
News outlets |
−4.10 |
−45.11, 36.92 |
|
|
−6.63 |
−43.40, 30.14 |
|
Mendeley |
0.74 |
−0.17, 1.67 |
|
Journal impact factor *** |
143.48 |
99.32, 187.63 |
|
Time (in weeks) *** |
1.08 |
0.56, 1.60 |
|
Publicly accessible × JIF *** |
−89.16 |
−140.82, −37.51 |
Adjusted R‑squared: 0.02006 , F‑statistic: 7.032 on 11 and 3,231 DF, p-value: 6.824e-12
*p-value <0.05, **p-value <0.01, ***p-value <0.001