Table 5. Calculation for Attributable Proportion of CKD for All-cause Mortality.

	Mortality	No Mortality	Total
CKD	a 24420	b 173104	197524
No CKD	c 29437	d 928376	957813
Total	53857	1101480	Grand Total (a+b+c+d) 1155337

AP_t = [(R_t–R_u)/R_t]×100.

AP_t is Attributable Proportion of mortality due to CKD in the total population.

R_t is the prevalence of mortality in the total population = a+c/a+b+c+d.

R_u is the prevalence of mortality in the unexposed (without CKD) population = c/c+d.

R_t = 53857/1155337 = 4.66%.

R_u = 29437/957813 = 3.07%.

AP_t = 34.1%.