Table 1

Demographics table

Demographicsn (%)
Hospital sitesManchester Heart Centre117 (37.6)
Pennine Acute Hospitals102 (32.8)
Wythenshawe (Manchester)92 (29.6)
Age (years)
Missing data n=3
18–4919 (6.2)
50–5940 (13.0)
60–6976 (24.7)
70–79121 (39.3)
80+52 (16.9)
GenderMale240 (77.2)
BMI
Missing data n=6
<18.52 (0.7)
18.5–24.968 (22.3)
25–29.9100 (32.8)
>30135 (44.3)
Ethnic origin
Missing data n=2
White British259 (83.8)
White other30 (9.8)
Asian14 (4.5)
Black4 (1.3)
Mixed1 (0.3)
Other1 (0.3)
Index of multiple deprivation decile*
Missing data n=10
Median decile4 (range 1–10)
Device type
Missing data n=1
CRT ICD204 (65.8)
CRT PPM55 (17.7)
ICD51 (16.5)
Smoking status
Missing data n=4
Current smoker30 (9.8)
Former smoker154 (50.2)
Non-smoker123 (40.1)
Comorbidities
Heart failure
Missing data n=4
HFREF245 (79.8)
HFPEF34 (11.1)
HF with unknown EF4 (1.3)
NYHA class†
Missing data n=4
I72 (24.7)
II149 (51.2)
III69 (23.7)
IV1 (0.3)
Depression
Missing data n=7
Yes, current depression38 (12.5)
Yes, previous depression33 (10.9)
CKD 3 or greater
Missing data n=12
126 (42.1)
Diabetes228 (73.3)
Hypertension
Missing data n=4
140 (45.6)
Atrial fibrillation or flutter
Missing data n=1
Permanent/persistent90 (29.0)
Paroxysmal44 (14.2)
Previous, ablated5 (1.6)
Ischaemic heart disease
Missing data n=8
158 (52.1)
Chronic obstructive pulmonary disease
Missing data n=7
36 (11.8)
Adult congenital heart disease
Missing data n=3
8 (2.6)
Frailty
PRISMA 7 score3
174 (55.9)
  • *Where 1=most deprived area, 10=least deprived area.

  • †For patients with HF only.

  • BMI, body mass index; CKD, chronic kidney disease; CRT, cardiac resynchronisation therapy device; EF, ejection fraction; HF, heart failure; HFPEF, HF with preserved ejection fraction; HFREF, HF with reduced ejection fraction; ICD, implanted cardiac defibrillator; NYHA, New York Heart Association; PPM, pacemaker.