Case Control Study
Copyright ©The Author(s) 2017.
World J Orthop. Dec 18, 2017; 8(12): 895-901
Published online Dec 18, 2017. doi: 10.5312/wjo.v8.i12.895
Table 2 Incidence of acute postoperative infections at 90 d following total hip arthroplasty
LocationSpringSummerFallWinterχ2
North East1.41%1.35%1.35%1.47%0.281
Mid West1.54%1.59%1.51%1.60%0.39
South1.60%1.68%1.58%1.64%0.277
West1.25%1.59%1.31%1.43%< 0.001
Mean1.45%1.55%1.44%1.54%
SD0.16%0.14%0.13%0.10%