Ann Clin Microbiol 2020;23:181-189. The Trend of Clostridioides difficile Infection in Korean Hospitals with the Analysis of Nationwide Sample Cohort

Table 1. The number and rates of C. difficile infections by demographic characteristics
CharacteristicCases No. (Infection rate, %)
Year2006200720082009201020112012201320142015TotalP-value*
Sex            
Male9 (0.034)22 (0.070)27 (0.080)42 (0.116)55 (0.140)63 (0.150)118 (0.267)100 (0.226)117 (0.255)143 (0.301)696 (0.178)<.0001
Female8 (0.027)18 (0.052)30 (0.080)53 (0.133)82 (0.186)83 (0.179)92 (0.186)132 (0.267)119 (0.236)172 (0.331)789 (0.182)<.0001
Age (yr)            
0-491 (0.003)4 (0.012)7 (0.020)11 (0.030)13 (0.032)16 (0.039)21 (0.050)14 (0.034)13 (0.031)25 (0.059)125 (0.033)0.0015
50-592 (0.025)4 (0.043)10 (0.093)9 (0.075)11 (0.079)10 (0.063)35 (0.204)20 (0.114)28 (0.156)30 (0.165)159 (0.113)0.0049
60-694 (0.049)10 (0.099)14 (0.131)12 (0.106)35 (0.287)36 (0.283)35 (0.252)36 (0.257)42 (0.287)46 (0.296)270 (0.219)0.0009
70-797 (0.102)9 (0.097)19 (0.191)32 (0.299)40 (0.345)44 (0.352)76 (0.550)77 (0.552)76 (0.533)104 (0.708)484 (0.412)<.0001
> 803 (0.113)13 (0.300)7 (0.149)31 (0.615)38 (0.673)40 (0.663)43 (0.612)85 (1.185)77 (0.993)110 (1.272)447 (0.758)<.0001
Insurance ranking            
Medical benefits3 (0.045)6 (0.075)10 (0.124)20 (0.236)20 (0.242)20 (0.241)36 (0.425)38 (0.477)28 (0.340)52 (0.647)233 (0.289)0.0001
1, 21 (0.014)4 (0.050)7 (0.085)12 (0.13)17 (0.167)18 (0.160)26 (0.215)29 (0.225)30 (0.228)28 (0.195)172 (0.162)0.0001
3, 43 (0.038)1 (0.013)7 (0.076)7 (0.070)23 (0.204)12 (0.103)23 (0.179)27 (0.221)24 (0.193)32 (0.262)159 (0.148)0.0004
5, 62 (0.022)11 (0.095)5 (0.041)13 (0.100)19 (0.133)18 (0.119)27 (0.169)18 (0.112)31 (0.186)45 (0.264)189 (0.134)0.0008
7, 84 (0.033)8 (0.056)10 (0.065)17 (0.103)20 (0.108)31 (0.161)44 (0.216)60 (0.291)53 (0.247)49 (0.222)296 (0.164)<.0001
9, 104 (0.030)10 (0.061)18 (0.101)26 (0.137)38 (0.182)47 (0.208)54 (0.225)60 (0.251)70 (0.288)109 (0.423)436 (0.210)<.0001

*P-value: the difference over 10 years (2006-2015).