a significant trendp < 0.001
There was a significant trend towards increase in the proportion of school-children with NSLBP as age increased despite some inconsistencies at some ages [ X 2 for linear trend = 73.3, p < 0.001] (Figure 2 ).
There was a significant trend towards increase in the proportion of school-children with NSLBP as age increased despite some inconsistencies at some ages [ X 2 for linear trend = 73.3, p < 0.001] (Figure 2 ).