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Section

Device Data.Electrocardiography

Data summary

Resurvey 2

Variable Stats / Values Freqs (% of Valid) Graph Missing
ecg_abnormal_ecg [factor]
  1. No
  1. Yes
18874 ( 75.5% )
6128 ( 24.5% )
250 (1.0%)
ecg_average_rr [integer]
Mean (sd) : 850.5 (131.6)
min ≤ med ≤ max:
0 ≤ 846 ≤ 1687
IQR (CV) : 171 (0.2)
843 distinct values 309 (1.2%)
ecg_description_all [character]
  1. SINUS RHYTHM, NORMAL ECG,
  1. SINUS RHYTHM, NONSPECIFIC
  1. SINUS RHYTHM, NONSPECIFIC
  1. SINUS RHYTHM, VOLTAGE CRI
  1. SINUS RHYTHM, LEFT VENTRI
  1. SINUS RHYTHM, MINIMAL VOL
  1. SINUS BRADYCARDIA, BORDER
  1. SINUS RHYTHM, MODERATE VO
  1. SINUS RHYTHM, MODERATE IN
  1. SINUS RHYTHM, MODERATE ST
[ 2325 others ]
10412 ( 41.6% )
1609 ( 6.4% )
520 ( 2.1% )
480 ( 1.9% )
437 ( 1.7% )
398 ( 1.6% )
355 ( 1.4% )
322 ( 1.3% )
309 ( 1.2% )
300 ( 1.2% )
9860 ( 39.4% )
250 (1.0%)
has_ecg_raw [integer]
Min : 0
Mean : 1
Max : 1
0 : 202 ( 0.8% )
1 : 24800 ( 99.2% )
250 (1.0%)
ecg_manufacturer [character]
  1. Edanins
  1. Mortara Instrument, Inc.
59 ( 0.2% )
24943 ( 99.8% )
250 (1.0%)
ecg_manufacturer_code [character]
  1. 10
24943 ( 100.0% )
309 (1.2%)
ecg_manufacturer_desc [character]
  1. ECG-3A Version 2.8
  1. ECG-3A Version 3.2
  1. el250
44 ( 0.2% )
15 ( 0.1% )
24943 ( 99.8% )
250 (1.0%)
ecg_manufacturer_id [character]
  1. 10
24943 ( 100.0% )
309 (1.2%)
ecg_model [character]
  1. ECG-3A
  1. ELIx50c 
    ·
59 ( 0.2% )
24943 ( 99.8% )
250 (1.0%)
ecg_p_axis [integer]
Mean (sd) : 46.3 (30.8)
min ≤ med ≤ max:
-90 ≤ 53 ≤ 415
IQR (CV) : 36 (0.7)
286 distinct values 693 (2.7%)
ecg_p_duration [integer]
Mean (sd) : 109.9 (19.8)
min ≤ med ≤ max:
0 ≤ 113 ≤ 196
IQR (CV) : 16 (0.2)
126 distinct values 251 (1.0%)
ecg_p_offset [integer]
Mean (sd) : -90.6 (23.6)
min ≤ med ≤ max:
-317 ≤ -88 ≤ -20
IQR (CV) : 25 (-0.3)
231 distinct values 751 (3.0%)
ecg_p_onset [integer]
Mean (sd) : -202.5 (25.1)
min ≤ med ≤ max:
-417 ≤ -200 ≤ -117
IQR (CV) : 28 (-0.1)
251 distinct values 751 (3.0%)
ecg_pr_duration [integer]
Mean (sd) : 155.5 (31.7)
min ≤ med ≤ max:
0 ≤ 156 ≤ 366
IQR (CV) : 27 (0.2)
239 distinct values 251 (1.0%)
ecg_q_offset [integer]
Mean (sd) : 48.6 (12.1)
min ≤ med ≤ max:
8 ≤ 47 ≤ 183
IQR (CV) : 15 (0.2)
124 distinct values 315 (1.2%)
ecg_q_onset [integer]
Mean (sd) : -44.3 (7.1)
min ≤ med ≤ max:
-183 ≤ -43 ≤ -7
IQR (CV) : 8 (-0.2)
93 distinct values 315 (1.2%)
ecg_qrs_axis [integer]
Mean (sd) : 36.2 (35)
min ≤ med ≤ max:
-90 ≤ 40 ≤ 270
IQR (CV) : 49 (1)
273 distinct values 251 (1.0%)
ecg_qrs_duration [integer]
Mean (sd) : 92.9 (13.4)
min ≤ med ≤ max:
0 ≤ 91 ≤ 245
IQR (CV) : 13 (0.1)
139 distinct values 251 (1.0%)
ecg_qt_duration [integer]
Mean (sd) : 382.1 (29.9)
min ≤ med ≤ max:
0 ≤ 381 ≤ 561
IQR (CV) : 36 (0.1)
256 distinct values 251 (1.0%)
ecg_qtc_duration [integer]
Mean (sd) : 403.1 (22.4)
min ≤ med ≤ max:
0 ≤ 403 ≤ 553
IQR (CV) : 26 (0.1)
220 distinct values 251 (1.0%)
ecg_qtcb_duration [integer]
Mean (sd) : 415.8 (26.3)
min ≤ med ≤ max:
0 ≤ 416 ≤ 593
IQR (CV) : 32 (0.1)
242 distinct values 309 (1.2%)
ecg_qtcf_duration [integer]
Mean (sd) : 403.8 (23.4)
min ≤ med ≤ max:
0 ≤ 403 ≤ 550
IQR (CV) : 28 (0.1)
236 distinct values 309 (1.2%)
ecg_r_peak [integer] 1 distinct value
500 : 24943 ( 100.0% )
309 (1.2%)
ecg_reason_all [character]
  1. (Empty string)
  1. MEETS CRITERIA IN ONE OF:
  1. VOLTAGE CRITERIA PLUS ST/
  1. 110+ ms QRS DURATION
  1. 0.05+ mV ST DEPRESSION
  1. ST ELEVATION WITH NORMALL
  1. 0.025+ mV ST DEPRESSION
  1. QRS AXIS < -20
  1. -0.1+ mV T WAVE IN V3/V4
  1. 120+ ms QRS DURATION, UPR
[ 614 others ]
15428 ( 61.7% )
1978 ( 7.9% )
576 ( 2.3% )
496 ( 2.0% )
427 ( 1.7% )
378 ( 1.5% )
340 ( 1.4% )
326 ( 1.3% )
325 ( 1.3% )
279 ( 1.1% )
4449 ( 17.8% )
250 (1.0%)
ecg_rv1 [integer]
Min : 0
Mean : 0
Max : 1
0 : 57 ( 98.3% )
1 : 1 ( 1.7% )
25194 (99.8%)
ecg_rv5 [integer]
Mean (sd) : 0.9 (0.6)
min ≤ med ≤ max:
0 ≤ 1 ≤ 2
IQR (CV) : 0 (0.7)
0 : 14 ( 24.1% )
1 : 35 ( 60.3% )
2 : 9 ( 15.5% )
25194 (99.8%)
ecg_sequence_number [integer]
Mean (sd) : 4877.4 (3134.3)
min ≤ med ≤ max:
31 ≤ 4517.5 ≤ 11877
IQR (CV) : 5107.8 (0.6)
11758 distinct values 294 (1.2%)
ecg_serial_number [character]
  1. 112060108365
  1. 112060108390
  1. 112090109689
8904 ( 35.7% )
5177 ( 20.8% )
10862 ( 43.5% )
309 (1.2%)
ecg_staff_id [character]
  1. 68155
  1. 78149
  1. 88163
  1. 36142
  1. 52136
  1. 46153
  1. 16133
  1. 58137
  1. 12144
  1. 26172
[ 23 others ]
3092 ( 12.4% )
2954 ( 11.8% )
2907 ( 11.6% )
2848 ( 11.4% )
2765 ( 11.1% )
2659 ( 10.6% )
2196 ( 8.8% )
2158 ( 8.6% )
1648 ( 6.6% )
853 ( 3.4% )
919 ( 3.7% )
253 (1.0%)
ecg_sv1 [integer]
Mean (sd) : 0.2 (0.5)
min ≤ med ≤ max:
0 ≤ 0 ≤ 2
IQR (CV) : 0 (2.5)
0 : 49 ( 84.5% )
1 : 7 ( 12.1% )
2 : 2 ( 3.4% )
25194 (99.8%)
ecg_sv5 [integer]
Min : 0
Mean : 0
Max : 1
0 : 57 ( 98.3% )
1 : 1 ( 1.7% )
25194 (99.8%)
ecg_t_axis [integer]
Mean (sd) : 39.4 (31.3)
min ≤ med ≤ max:
-90 ≤ 42 ≤ 270
IQR (CV) : 35 (0.8)
330 distinct values 251 (1.0%)
ecg_t_offset [integer]
Mean (sd) : 337.9 (29.1)
min ≤ med ≤ max:
183 ≤ 337 ≤ 502
IQR (CV) : 36 (0.1)
257 distinct values 315 (1.2%)
ecg_type [character]
  1. RESTING
25002 ( 100.0% )
250 (1.0%)
ecg_vent_rate [integer]
Mean (sd) : 71.8 (11.6)
min ≤ med ≤ max:
35 ≤ 70 ≤ 163
IQR (CV) : 14 (0.2)
105 distinct values 257 (1.0%)
ecg_pro_af [factor]
  1. No
  1. Yes
24448 ( 97.8% )
554 ( 2.2% )
250 (1.0%)
ecg_arrhythmia_af [factor]
  1. No
  1. Yes
24696 ( 98.8% )
306 ( 1.2% )
250 (1.0%)
ecg_arrhythmia_bc [factor]
  1. No
  1. Yes
23409 ( 93.6% )
1593 ( 6.4% )
250 (1.0%)
ecg_arrhythmia_oa [factor]
  1. No
  1. Yes
22713 ( 90.8% )
2289 ( 9.2% )
250 (1.0%)
ecg_arrhythmia_tc [factor]
  1. No
  1. Yes
24996 ( 100.0% )
6 ( 0.0% )
250 (1.0%)
ecg_ischaemia [factor]
  1. No
  1. Possible
  1. Probable
  1. Definite
17890 ( 71.6% )
5176 ( 20.7% )
1312 ( 5.2% )
624 ( 2.5% )
250 (1.0%)
ecg_lvh [factor]
  1. No
  1. Yes
21581 ( 86.3% )
3421 ( 13.7% )
250 (1.0%)
ecg_normal [factor]
  1. No
  1. Yes
13802 ( 55.2% )
11200 ( 44.8% )
250 (1.0%)
ecg_other_pathology [factor]
  1. No
  1. Yes
21060 ( 84.2% )
3942 ( 15.8% )
250 (1.0%)
ecg_unclassifiable [factor]
  1. No
  1. Yes
24996 ( 100.0% )
6 ( 0.0% )
250 (1.0%)

Generated by summarytools 1.0.1 (R version 4.3.1)
2024-02-27

Resurvey 2

Variable Stats / Values Freqs (% of Valid) Graph Missing
has_device_ecg_base_std [factor]
  1. No
  1. Yes
250 ( 1.0% )
25002 ( 99.0% )
0 (0.0%)
has_device_ecg_base [factor]
  1. No
  1. Yes
250 ( 1.0% )
25002 ( 99.0% )
0 (0.0%)

Generated by summarytools 1.0.1 (R version 4.3.1)
2024-02-27




International Coordinating Centre, China Kadoorie Biobank (CKB), CTSU, Nuffield Department of Population Health, University of Oxford Old Road Campus, Headington, Oxford, OX3 7LF

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Copyright China Kadoorie Biobank (CKB), University of Oxford, (2024)

Page generated: 27-02-2024