Trough cross-bedding, tabular cross-bedding, and parallel bedding successively dominated upward, and wave-ripple bedding was evident at the top of this unit, which indicates fluvial deltaic channel facies.
Cross-tabular analysis showed no meaningful predilection of back claims by industry, occupation, or sex compared with other injuries.
SAS 9.1.3 was used to compute one-way frequency tables, measures of central tendency, and two-way cross-tabular tables and test statistics (e.g., Fisher's exact test).
One-way and cross-tabular frequency tables were generated for categorical variables; means and standard deviations were generated as measures of central tendency for continuous variables.
Note that due to the low number of respondents who cited health related issues as barriers to access, these data cannot be reported in cross-tabular format per Statistics Canada's policies on data disclosure related to minimum sample size [ 28].
We calculated descriptive statistics and cross-tabular frequencies for each outcome and comorbidity to determine the shape of distributions, the extent of missing data, and the presence of small frequencies of the discrete comorbidity levels.
Primary sedimentary structures, such as parallel bedding, trough cross bedding, tabular cross bedding, and cut-and-fill structures, are seen in the litho-sections.
Each erosively based fining-upward fluvial cycle is divided into three parts: a lower part of trough cross-bedded conglomerate and coarse sandstone; a middle part of tabular cross-bedded, ripple cross-laminated and horizontally laminated sandstone; and an upper part of predominantly horizontally laminated and massive mudstone.
From bottom to top, sedimentary structures include a scour surface (Fig. 3a), graded bedding, tabular cross bedding (Fig. 3b), parallel bedding (Fig. 3b), climbing-ripple cross stratification (Fig. 3c), wavy bedding, and convolute bedding (Fig. 3d).
