Model fit indices for the SPSI
| Scaled χ2 (df) | CFI | TLI | RMSEA (90% CI) | AIC/BIC | SRMR | |
| Athletes (n=168) | ||||||
| Unidimensional model | (44) 238.81, p<0.001 | 0.592 | 0.490 | 0.162 (0.142 to 0.183), p<0.001 | 4587.93/4691.02 | 0.181 |
| Second order model | (41) 57.39, p=0.050 | 0.966 | 0.954 | 0.049 (0.007 to 0.077), p=0.500 | 4241.31/4353.78 | 0.081 |
| Bifactor model | 00 (33) 36.68, p=0.302 | 0.992 | 0.987 | 0.026 (0.000 to 0.064), p=0.821 | 4222.76/4360.21 | 0.054 |
| Coaches/HPSS (n=238) | ||||||
| Unidimensional model | (44) 340.37, p<0.001 | 0.584 | 0.481 | 0.168 (0.152 to 0.185), p<0.001 | 5843.82/5958.40 | 0.148 |
| Second order model | (41) 103.79, p<0.001 | 0.912 | 0.882 | 0.080 (0.061 to 0.100), p=0.006 | 5492.37/5617.37 | 0.077 |
| Bifactor model | (34) 53.63, p=0.017 | 0.972 | 0.955 | 0.049 (0.021 to 0.073), p=0.492 | 5434.25/5583.56 | 0.048 |
| Combined (n=408) | ||||||
| Unidimensional model | (44) 585.09, p<001 | 0.574 | 0.467 | 0.174 (0.162 to 0.187), p<0.001 | 10541.39/10 673.60 | 0.166 |
| Second order model | (41) 123.46, p<0.001 | 0.935 | 0.913 | 0.070 (0.056 to .085), p=0.010 | 9798.93/9943.16 | 0.077 |
| Bifactor model | (34) 30.35, p=0.004 | 0.979 | 0.967 | 0.044 (0.025 to 0.061), p=0.701 | 9718.03/9890.30 | 0.049 |
AIC/BIC, Akaike information criterion / Bayesian Information Criteria; ARPB, Average relative parameter bias; CFI, Comparative fit index; HPSS, high-performance support staff; RMSEA, Root mean square error of approximation; SPSI, Sport Psychological Safety Inventory; SRMR, Standardized Root Mean Squared Residual; TLI, Tucker-Lewis index.