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. 2023 Apr 3;151:e64. doi: 10.1017/S0950268823000432

Table 1.

Baseline after patient matching at NI pathogens level

Variable All NIs E coli KP SA PA
Case group
 Matched no. 1,858 169 54 97 64
 Unmatched no. 257 8 1 1 14
Control group
 Matched no. 1,858 169 54 97 64
 Unmatched no. 136,207 64,650 22,575 57,869 24,498
Age (mean (SD))
 Case group 43.8(21.6) 39.8(19.4) 50.3(18.9) 33.9(23.3) 46.6(21.1)
 Control group 43.0(20.6) 39.0(18.9) 53.1(19.7) 34.4(23.8) 48.8(20.4)
 p-value 0.225 0.72 0.452 0.882 0.554
Female (%)
 Case group 753(40.5) 100(59.2) 21(38.9) 34(35.1) 14(21.9)
 Control group 762(41.0) 97(57.4) 24(44.4) 33(34.0) 14(21.9)
 p-value 0.789 0.825 0.696 1 1
Operation (%)
 Case group 1,064(57.3) 117(69.2) 25(46.3) 51(52.6) 40(62.5)
 Control group 1,071(57.6) 119(70.4) 30(55.6) 53(54.6) 39(60.9)
 p-value 0.842 0.906 0.441 0.886 1
IMV (%)
 Case group 279(15.0) 8(4.7) 14(25.9) 11(11.3) 21(32.8)
 Control group 266(14.3) 8(4.7) 12(22.2) 10(10.3) 21(32.8)
 p-value 0.578 1 0.822 1 1
CVC (%)
 Case group 423(22.8) 24(14.2) 23(42.6) 15(15.5) 22(34.4)
 Control group 418(22.5) 22(13.0) 19(35.2) 14(14.4) 20(31.2)
 p-value 0.875 0.874 0.554 1 0.851
IC (%)
 Case group 934(50.3) 101(59.8) 37(68.5) 30(30.9) 33(51.6)
 Control group 925(49.8) 99(58.6) 34(63.0) 29(29.9) 28(43.8)
 p-value 0.793 0.912 0.685 1 0.479

Abbreviations: CVC, central venous catheterization; E. coli, Escherichia coli; IC, indwelling catheter; IMV, invasive mechanical ventilation; KP, Klebsiella pneumoniae; NI, nosocomial infection; no., number; PA, Pseudomonas aeruginosa; SA, Staphylococcus aureus; SD, standard deviation.