Sentence examples for using a linear spline from inspiring English sources
Then, raw signals were interpolated using a linear spline algorithm to remove missing frames.
A repeated measurements analysis was performed using a linear spline model with knots at timepoints 3 h, 8 h and 24 h based on the line plots.
Age for males was fitted using a linear spline with a knot at 21 weeks in order to fit non-linear data.
For each of the continuous variables, the hypothesis of a linear association was evaluated using a linear spline with three boundaries, placed at the quartiles among cases, as covariates in the Cox model [ 34].
Parity was further modelled using a linear spline function with a knot at one live birth to assess the effect of first live birth and trend after the first live birth, simultaneously (Greenland, 1998).
In analysis using a linear spline, each 1-µg/dL increase in blood lead level > 1 µg/dL was associated with a percent change in GFR of –3.8 (95% CI: –8.1, 0.4; p = 0.08); the corresponding estimate for a lead level < 1 µg/dL was 15.9 (95% CI: –9.7, 41.6; p = 0.22).
We used a linear spline approach, which allowed the rate of under-five mortality decline to change following IMCI implementation.
An exception to the latter is a recent study that used a linear spline random-effects model to show that higher weight gains in the first 5 mo and from 21 mo to 5 y were associated with higher BP (47).
Trends in annual age-adjusted mortality rates and percent of overall mortality due to gastroenteritis were assessed using a linear regression spline analysis to determine if there was a change in slope between the use of ICD-9 and ICD-10 coding.
All marker trajectories were visually inspected and interpolated when coordinates were missing using a linear or a cubic spline method.
Additionally, all pregnancy weight measurements (median, 10 measurements; interquartile range, 8 11 measurements) were used to develop a linear spline multilevel model (with 2 levels, woman and measurement occasion) relating weight to gestational age, with knots at 18 and 28 weeks.
