Table 2.

Means before centring, standard deviations, minimum and maximum values for all variables. Unit of analysis of our study is the individual academic.

	Mean	Standard deviation	Minimum	Maximum
Categorical variables
1 Gender	0.705	0.456	0.000	1.000
2 Physician status	0.480	0.500	0.000	1.000
3 Institute of Clinical Sciences	0.027	0.161	0.000	1.000
4 Kennedy Institute of Rheumatology	0.046	0.209	0.000	1.000
5 Department of Medicine	0.409	0.492	0.000	1.000
6 National Heart Lung Institute	0.197	0.398	0.000	1.000
7 School of Public Health	0.109	0.311	0.000	1.000
8 Senior lecturer	0.257	0.437	0.000	1.000
9 Reader	0.126	0.332	0.000	1.000
10 Professor	0.410	0.492	0.000	1.000
Integer and continuous variables
11 Number of citations	414.419	655.472	0.000	7,883.000
12 Number of past publications	29.270	58.252	0.000	1,013.000
13 Median number of co-authors per publication	6.600	3.313	2.000	40.000
14 Minimum number of co-authors per publication	2.900	1.620	2.000	26.000
15 Degree	0.013	0.021	0.000	0.302
16 Betweenness	0.080	0.150	0.000	2.180
17 Closeness	0.010	0.000	0.000	0.010
18 Eigenvector	0.010	0.030	0.000	0.410
19 Clustering coefficient	0.320	0.250	0.000	1.000
20 Constraint	0.160	0.328	0.000	10.583
21 Solo-authored publications	1.078	2.986	0.000	48.000
Positions in non-alphabetised bylines
22 First	1.833	2.540	0.000	35.000
23 Last	4.380	6.900	0.000	89.615
24 Second	1.816	2.418	0.000	23.000
25 Penultimate	2.317	4.327	0.000	87.000
26 Other	4.419	7.089	0.000	104.000
Positions in alphabetised bylines
27 First	0.400	0.928	0.000	7.597
28 Last	0.611	1.398	0.000	14.000
29 Second	0.104	0.429	0.000	6.000
30 Penultimate	0.025	0.168	0.000	2.000
31 Other	0.014	0.133	0.000	2.000