The phrase "a difference in time to" is correct and usable in written English.
It can be used when discussing variations in timing or duration related to an event or action.
Example: "There is a significant difference in time to complete the project between the two teams."
Alternatives: "a variation in time to" or "a discrepancy in time to".
Their relation cannot be used to calculate a difference in time to attain a certain cumulative incidence, as it includes events when the worse-off group has reached a cumulative incidence that is not reached by the better-off group.
To statistically test whether or not there is a difference in time to readmission between the cases and controls, and to test for covariates in the model, a Cox proportional hazards regression was carried out.
From the Cox proportional hazards model, after adjustment for baseline ulcer area, baseline ulcer duration, use of compression bandaging, and study centre (as a random effect), there was still no evidence of a difference in time to healing between the two treatment groups (hazard ratio 0.99 (95% confidence interval 0.70 to 1.40), P=0.97).
Secondary research questions were whether there was a difference in time to walking without aid, and improvement in pain and knee function.
Allowing for a 20%% discontinuation rate, approximately 262 patients (131 in each treatment group) were required to detect a difference in time to first clinical response between the treatment groups with a power of 85%%.
This remains highly significant even if cases with axillary disease are excluded (P=0.0004), and reflects a significantly longer survival from recurrence (log rank 2 df P=0.0014) rather than a difference in time to recurrence detection.
Kent et al. (2003) [ 1] found a significant difference in time to milk ejection between breastfeeding and in response to a range of stimulation patterns provided by an electric pump (120 – 149 s) suggesting there may be some variation in the timing of the release of oxytocin in response to different stimuli.
This might also explain the lack of a significant difference in time to first analgesic requirement.
We found a significant difference in time to pregnancy in favour of immobilisation (log rank test, P=0.026).
In the aged peak titers to H1N1 were also reached by day 10 after vaccination while average peak responses to the H3N2 virus were delayed to day 14 reflecting a significant difference in time to peak response (p = 0.0316).
Twine et al. previously demonstrated a significant difference in time to death for BALB/c mice infected intradermally or via aerosol with Schu S4 as compared to the type A strain, FSC033 [ 17].
