a clear trendP = 0.08
A reduction of 1% in negative strain (less negative) was significantly associated with outcome HR 1.11 [95% CI 1.01–1.22] (P = 0.03) with a clear trend in the multivariable model including QRS duration and aetiology (HR 1.09 [95% CI 0.99–1.20] P = 0.08 ).