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721_part2_analyses_option2_table2b_rateratios.do
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721_part2_analyses_option2_table2b_rateratios.do
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local mypath="`c(pwd)'/analysis/"
do `mypath'/000_filepaths.do
**// Outcome rates and rate ratios
**//////////////////////////////////////////////
use $outdir/matched_part2_groups_1_and_2.dta, clear
drop if group==4
local grouplabel1="COVID-19 with diabetes"
local grouplabel2="COVID-19 without diabetes"
local grouplabel3="Pneumonia with diabetes"
gen expos=(group==1)
set more off
tempname rates
postfile `rates' outindex groupindex str30(outcome) str30(group) person_time numevents rate rate_lo rate_hi ///
rateratio rateratio_lo rateratio_hi ///
adj_rateratio adj_rateratio_lo adj_rateratio_hi ///
fulladj_rateratio fulladj_rateratio_lo fulladj_rateratio_hi ///
ipw_rateratio ipw_rateratio_lo ipw_rateratio_hi ///
sipw_rateratio sipw_rateratio_lo sipw_rateratio_hi ///
using $resultsdir/part2_option2_table2b_rateratios.dta, replace
**// Loop over outcomes
local outindex=0
foreach outcome in "stroke_thrombotic" "stroke_haemorrhagic" "stroke_tia" "stroke_any" "mi" "dvt_any" "pe_any" "hf" "any_cvd" "aki_any" "liver" ///
"anxiety" "depression" "psychosis" "antidepressant" "anxiolytic" "antipsychotic" "mood_stabiliser" "sleep_insomnia" "sleep_hypersomnia" "sleep_apnoea" "fatigue" "death" {
local outindex=`outindex'+1
gen myend=(min(date_`outcome', date_censor)-date_patient_index)/(365.25/12)
gen ln_myend=ln(myend)
gen myselect=(myend>0)
gen delta=(date_`outcome'==min(date_`outcome', date_censor))
capture stset myend, f(delta) id(patient_id)
**// Loop over exposure groups
capture stptime if group==1 & myselect==1, title(person-months) per(10000)
if _rc==0 {
post `rates' (`outindex') (1) ("`outcome'") ("`grouplabel1'") (`r(ptime)') (`r(failures)') (`r(rate)') (`r(lb)') (`r(ub)') (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.)
}
if _rc!=0 {
post `rates' (`outindex') (1) ("`outcome'") ("`grouplabel1'") (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.) (.)
}
forvalues k=2(1)2 {
replace myselect=(myend>0)
capture stptime if group==`k' & myselect==1, title(person-months) per(10000)
if _rc==0 {
local person_time=r(ptime)
local numevents=r(failures)
local rate=r(rate)
local rate_lo=r(lb)
local rate_hi=r(ub)
}
if _rc!=0 {
local person_time=.
local numevents=.
local rate=.
local rate_lo=.
local rate_hi=.
}
**// Loop over model specifications (comparing group 1 and group k)
forvalues m=1(1)5 {
**// Rate ratio
if `m'==1 {
capture nbreg delta expos if (group==1 | group==`k') & myselect==1, offset(ln_myend) nonrtolerance
}
**// Age/sex adjusted rate ratio
if `m'==2 {
capture nbreg delta expos i.cat_sex i.cat_age if (group==1 | group==`k') & myselect==1, offset(ln_myend) vce(robust) nonrtolerance
}
**// Fully adjusted rate ratio
if `m'==3 {
capture nbreg delta expos i.cat_sex i.cat_age i.cat_ethnic i.cat_imd i.cat_hist_cvd i.cat_hist_renal i.cat_smoking i.cat_alcohol i.cat_bmi ///
if (group==1 | group==`k') & myselect==1, offset(ln_myend) vce(robust) nonrtolerance
}
**// IPW rate ratio
if `m'==4 {
capture logit expos i.cat_sex i.cat_age i.cat_ethnic i.cat_imd i.cat_hist_cvd i.cat_hist_renal i.cat_smoking i.cat_alcohol i.cat_bmi if (group==1 | group==`k') & myselect==1
if _rc==0 {
predict propensity
gen ipw=(expos/propensity)+((1-expos)/(1-propensity))
}
capture nbreg delta expos if (group==1 | group==`k') & myselect==1 [pweight=ipw], offset(ln_myend) vce(robust) nonrtolerance
}
**// Trimmed and standardised IPW rate ratios
if `m'==5 {
capture describe propensity
if _rc==0 {
replace myselect=0 if propensity<0.1 | propensity>0.9
count if group==1 & myselect==1
local count_expos=r(N)
count if (group==1 | group==`k') & myselect==1
local count_denom=r(N)
local myp=`count_expos'/`count_denom'
gen sipw=(expos*`myp'/propensity)+(((1-expos)*(1-`myp'))/(1-propensity))
}
capture nbreg delta expos if (group==1 | group==`k') & myselect==1 [pweight=sipw], offset(ln_myend) vce(robust) nonrtolerance
}
if _rc==0 {
matrix M1=e(b)
matrix M2=e(V)
local rateratio`m'=exp(M1[1,1])
local rateratio`m'_lo=exp(M1[1,1]-1.96*M2[1,1]^0.5)
local rateratio`m'_hi=exp(M1[1,1]+1.96*M2[1,1]^0.5)
}
if _rc!=0 {
local rateratio`m'=.
local rateratio`m'_lo=.
local rateratio`m'_hi=.
}
}
post `rates' (`outindex') (`k') ("`outcome'") ("`grouplabel`k''") (`person_time') (`numevents') (`rate') (`rate_lo') (`rate_hi') ///
(`rateratio1') (`rateratio1_lo') (`rateratio1_hi') ///
(`rateratio2') (`rateratio2_lo') (`rateratio2_hi') ///
(`rateratio3') (`rateratio3_lo') (`rateratio3_hi') ///
(`rateratio4') (`rateratio4_lo') (`rateratio4_hi') ///
(`rateratio5') (`rateratio5_lo') (`rateratio5_hi')
foreach myvar in propensity ipw sipw {
capture drop `myvar'
}
}
foreach myvar in myselect myend ln_myend delta _st _d _t _t0 {
capture drop `myvar'
}
}
postclose `rates'
use $resultsdir/part2_option2_table2b_rateratios.dta, clear
**// Labelling
gen type=""
order type, before(outcome)
do `mypath'/003_outlab.do
do `mypath'/004_typelab.do
**// Tidy
sort outindex groupindex
gen temp1=1 if type==type[_n-1]
replace type="" if temp1==1
gen temp2=1 if outcome==outcome[_n-1]
replace outcome="" if (temp2==1 | lower(outcome)=="death")
drop outindex groupindex temp1 temp2
describe type-group, varlist
foreach myvar in `r(varlist)' {
gen str=strlen(`myvar')
summ str
format `myvar' %-`r(max)'s
drop str
}
format person_time %12.1fc
format numevents %12.0fc
**// Format rates
format rate rate_lo rate_hi %12.1fc
tostring rate, gen(temp1) force usedisplayformat
tostring rate_lo, gen(temp2) force usedisplayformat
tostring rate_hi, gen(temp3) force usedisplayformat
gen rate_ci=temp1+" ("+temp2+", "+temp3+")"
drop rate rate_lo rate_hi temp*
rename rate_ci rate
**// Format rate ratios
foreach myvar in "rateratio" "adj_rateratio" "fulladj_rateratio" "ipw_rateratio" "sipw_rateratio" {
format `myvar' `myvar'_lo `myvar'_hi %12.2fc
tostring `myvar', gen(temp1) force usedisplayformat
tostring `myvar'_lo, gen(temp2) force usedisplayformat
tostring `myvar'_hi, gen(temp3) force usedisplayformat
gen `myvar'_ci=temp1+" ("+temp2+", "+temp3+")"
drop `myvar' `myvar'_lo `myvar'_hi temp*
rename `myvar'_ci `myvar'
}
do `mypath'/005_table_edit.do
save $resultsdir/part2_option2_table2b_rateratios.dta, replace