https://public-health-scotland.r-universe.dev/phsmethodshttps://public-health-scotland.r-universe.dev/api/packages/phsmethodshttps://public-health-scotland.r-universe.dev/phsmethods/phsmethods.pdfhttps://public-health-scotland.r-universe.dev/phsmethods/doc/manual.htmlhttps://public-health-scotland.r-universe.dev/phsmethods/NEWShttps://public-health-scotland.r-universe.dev/phsmethods/NEWS.txthttps://public-health-scotland.r-universe.dev/phsmethods/citationhttps://public-health-scotland.r-universe.dev/phsmethods/citation.txthttps://public-health-scotland.r-universe.dev/phsmethods/citation.cffhttps://public-health-scotland.r-universe.dev/phsmethods/doc/percent.Rmdhttps://public-health-scotland.r-universe.dev/articles/phsmethods/percent.htmlhttps://public-health-scotland.r-universe.dev/phsmethods/doc/chi-operations.Rmdhttps://public-health-scotland.r-universe.dev/articles/phsmethods/chi-operations.html