Total (n=749) PICM (n= 74) No PICM (n=675) P Value*
Age, years 59.19 ± 14.08 57.7 ± 15.67 59.36 \(\pm\) 13.90 0.338
Female (%) 237 (31.6) 25 (33.8) 212 (31.4) 0.676
Diabetes (%) 257 (34.36) 24 (32.4) 233 (34.6) 0.713
Hypertension (%) 406 (54.28) 41 (55.4) 365 (54.1) 0.838
Hypothyroidism (%) 84 (11.23) 10 (13.5) 74 (10.9) 0.512
Drugs (%) Beta-blocker ACE inhibitors 229 (30.57) 292 (38.99) 28 (37.8) 34 (45.9) 201 (29.8) 258 (38.2) 0.153 0.196
Indication (%) High Grade AV Block Sinus Node Dysfunction Others 557 (74.37) 180 (24.03) 12 (1.60) 65 (87.84) 8 (10.81) 1 (1.35) 492 (72.89) 172 (25.48) 11 (1.63)
0.013
Implanting physician (%) More than 3 yr experience Less than 3 year experience 451 (60.21) 298 (39.79) 45(60.8) 29 (39.2) 406(60.15) 269 (39.85)
0.912
Pacing mode (%) VVI VVIR VDD DDD DDDR 65 (8.68) 18 (2.40) 69 (9.21) 133 (17.76) 464 (61.95) 4(5.4) 2(2.7) 8(10.8) 14(18.9) 46(62.16) 61(9) 16(2.37) 61(9.04) 119(17.6) 418(61.9)
0.855
Rate adaptive pacing (%) 587 (78.37) 59(79.7) 528(78.2) 0.765
Apical location (%) 228 (30.44) 23 (31.1) 205 (30.8) 0.900
Baseline LV EF % 57.3 \(\pm\) 3.3 56.1 \(\pm\) 1.4 57.1 \(\pm\) 2.1 0.047
Intrinsic QRS duration, msec 122.9 \(\pm\) 26.2 127.4 \(\pm\) 25.9 121.7 \(\pm\) 26.2 0.088
Intrinsic QRS Morphology (%) Narrow QRS RBBB/ IVCD LBBB 50.43 24.79 24.79 46.4 18.8 34.8 50.87 25.44 23.69
0.109
Paced QRS duration, msec 134.9 \(\pm\) 25.4 149.8 \(\pm\)20.4 133.25 \(\pm\) 25.3 0.023
Median RV pacing burden %,(IQR) 81 (15-99) 98.15 (81-99) 75 (13-99) 0.0006