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Table 1 Cases of all cardiac incidences reported from May 2010 to April 2012 in the Cardiology department of a leading hospital in Bangladesh (Sher-E-Bangla Medical College)

From: Effect of seasonal variation on hospital admission due to cardiovascular disease - findings from an observational study in a divisional hospital in Bangladesh

  Total Patients Summer Autumn Winter Spring p – value (Winter versus other seasons)
  no. n (%) n (%) n (%) n (%) vs Summer vs Autumn vs Spring
All Cases 8371 1648 (19.7) 2015 (24.1) 2839 (33.9) 1869 (22.3) 0.018 0.020 0.023
Acute MI 2374 491 (20.7) 541 (22.8) 714 (30.1) 628 (26.4) 0.012 0.015 0.082
Old MI 566 108 (19.1) 141 (24.9) 210 (37.1) 107 (18.9) 0.005 0.021 0.016
NSTEMI 475 65 (13.7) 125 (26.3) 191 (40.2) 94 (19.8) 0.002 0.009 0.002
Unstable Angina 1277 262 (20.5) 336 (26.3) 423 (33.1) 256 (20.1) 0.003 0.063 0.004
Stable Angina 411 39 (9.5) 66 (16.1) 192 (46.7) 114 (27.7) 0.039 0.037 0.126
Acute LVF 1582 354 (22.4) 401 (25.3) 513 (32.5) 314 (19.8) 0.050 0.079 0.017
ICM / HF / DCM 471 64 (13.5) 89 (18.9) 199 (42.3) 119 (25.3) 0.041 0.056 0.122
Syncope 78 9 (11.5) 18 (23.1) 34 (43.6) 17 (21.8) 0.001 0.003 0.012
Arrhythmia 358 80 (22.3) 106 (29.6) 119 (33.3) 53 (14.8) 0.052 0.485 0.059
Cardiac Death 779 176 (22.6) 192 (24.6) 244 (31.3) 167 (21.5) 0.044 0.050 0.014
  1. Data reported as “n” refer to adjusted seasonal average number of admission by seasons and by diseases. p-values were calculated by t-tests. p < 0.05 was considered statistically significant.