Table 2 Hazard ratios (HR) and 95% confidence interval for one-year all-cause mortality of DAPT adherence estimated from multivariate Cox proportional hazard model (N = 2019)

DAPT adherence versus non-adherence

0.52

(0.36, 0.76)

 < 0.001

Age (years)

1.05

(1.03, 1.07)

 < 0.001

Male versus female

0.91

(0.56, 1.47)

0.69

Hypertension versus no hypertension

1.03

(0.68, 1.54)

0.90

Antihypertensive treatment versus no treatment

0.08

(0.05, 0.14)

 < 0.001

Diabetes versus no diabetes

1.43

(0.97, 2.1)

0.07

Eligible CAD type

 Chronic stable angina/positive stress test

Ref

Ref

Ref

 Previous myocardial infraction

1.56

(0.89, 2.71)

0.12

 Acute coronary syndrome

0.99

(0.65, 1.51)

0.96

No smoking versus smoking

1.09

(0.71, 1.67)

0.71

Underwent PCI out of versus in Mumbai

0.71

(0.45, 1.13)

0.15

Middle school and above versus none or up to primary school

1.36

(0.91, 2.03)

0.14

Employed versus unemployed

1.12

(0.73, 1.72)

0.61

Stent location

 LAD

Ref

Ref

Ref

 RCA

0.43

(0.22, 0.83)

0.01

 LCX

0.42

(0.16, 1.05)

0.06

Multiple locations

0.75

(0.43, 1.33)

0.33

Stent type

 BMS

Ref

Ref

Ref

 DES

0.97

(0.64, 1.45)

0.86

 DES and BMS

0.47

(0.14, 1.55)

0.21

Year of PTCA

 2012

Ref

Ref

Ref

 2013

0.92

(0.53, 1.6)

0.77

 2014

1.66

(0.88, 3.12)

0.12

 2015

2.25

(1.20, 4.23)

0.01

Total length of stents

1.01

(1.00, 1.03)

0.02

Total number of stents (mm)

1.04

(0.68, 1.59)

0.85