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. 2023 May 5;5:100074. doi: 10.1016/j.sleepx.2023.100074

Table 5.

Association between chronic insomnia (Bergen Insomnia Scale) and different types of infection.

Chronic insomnia
χ2 (df) p-value1
No Yes
Common cold 3.3 (1) 0.07
 No 221 (52.4%) 218 (46.1%)
 Yes 201 (47.6%) 255 (53.9%)
Throat infection 11.9 (1) <0.001
 No 385 (91.4%) 395 (83.5%)
 Yes 36 (8.6%) 78 (16.5%)
Ear infection 4.5 (1) 0.034
 No 410 (97.4%) 446 (94.3%)
 Yes 11 (2.6%) 27 (5.7%)
Sinusitis 7.8 (1) 0.005
 No 390 (92.6%) 410 (86.7%)
 Yes 31 (7.4%) 63 (13.3%)
Pneumonia/bronchitis 4.8 (1) 0.028
 No 411 (97.6%) 447 (94.5%)
 Yes 10 (2.4%) 26 (5.5%)
COVID-19 1.6 (1) 0.205
 No 337 (80.2%) 396 (83.7%)
 Yes 83 (19.8%) 77 (16.3%)
Influenzalike illness 18.0 (1) <0.001
 No 319 (75.6%) 294 (62.2%)
 Yes 103 (24.4%) 179 (37.8%)
Skin infection 9.8 (1) 0.002
 No 349 (82.7%) 349 (73.8%)
 Yes 73 (17.3%) 124 (26.2%)
Gastrointestinal infection 18.2 (1) <0.001
 No 364 (86.3%) 353 (74.6%)
 Yes 58 (13.7%) 120 (25.4%)
Urinary infection 0.2 (1) 0.681
 No 397 (94.1%) 449 (94.9%)
 Yes 25 (5.9%) 24 (5.1%)
Venereal disease 0.0 (1) 1.000
 No 413 (98.1%) 464 (98.1%)
 Yes 8 (1.9%) 9 (1.9%)
Eye infection 5.8 (1) 0.016
 No 397 (94.3%) 424 (89.6%)
 Yes 24 (5.7%) 49 (10.4%)

χ2, Pearson chi-square with continuity correction. df, degrees of freedom. Significant results are indicated in bold.