Fig. 2

Listed author number by initial citation set size category (N = 259). The median (IQR) number of authors listed by citation set size category was as follows: < 1,000: 5.0 (3.2, 6.0); 1,000–2,500: 7.0 (5.0, 8.0): 2,500–5,000: 6.0 (4.0, 8.0): 5,000–10,000: 5.5 (4.0, 8.0) and > 10,000: 6.0 (4.5, 8.0). In pairwise t tests, corrected for multiple comparisons using Holm’s method, only three comparisons yielded a p-value less than 0.2: < 1000 vs 1,000–2,500 (p value = 0.18); < 1000 vs 5,000–10,000 (p value = 0.15); and < 1000 vs > 10,000 (p value = 0.046)