Citation
Liu, Hongyou and Hopkins, Will and Gomez Ruano, Miguel Angel and Sampedro Molinuevo, Javier
(2013).
Inter-operator reliability of live football match statistics from OPTA Sportsdata.
"International Journal of Performance Analysis in Sport", v. 13
(n. 3);
pp. 803-821.
ISSN 1474-8185.
Abstract
The aim of the study was to evaluate the inter-operator reliability of OPTA Client System which is used to collect live football match statistics by OPTA Sportsdata Company. Two groups of experienced operators were required to analyze a Spanish league match independently. Results showed that team events coded by independent operators reached a very good agreement (kappa values were 0.92 and 0.94) and average difference of event time was 0.06±0.04 s. The reliability of goalkeeper actions was also at high level, kappa values were 0.92 and 0.86. The high intra-class correlation coefficients (ranged from 0.88 to 1.00) and low standardized typical errors (varied from 0.00 to 0.37) of different match actions and indicators of individual outfield players showed a high level of inter-operator reliability as well. These results suggest that the OPTA Client System is reliable to be used to collect live football match statistics by well trained operators.