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. 2019 May 22;8:80. doi: 10.1186/s13756-019-0536-0

Table 5.

Age-wise association of ESBL-production with different isolates

Isolates Age group Number (%) ESBL-production Chi-score *p-value
Positive (%) Negative (%)
Escherichia coli (n = 321) 0–20 44 (14) 41 (93) 3 (7) 0.900678
21–40 100 (31) 82 (82) 18 (3) 0.767442
41–60 120 (37) 94 (78) 26 (3) 0.045746
61–80 53 (17) 45 (85) 8 (6) 1.40471
> 80 4 (1) 0 (0) 4 (75) 14.33333 <0.0001
Klebsiella spp. (n = 124) 0–20 22 (18) 18 (82) 4 (18) 0.170543
21–40 38 (31) 28 (74) 10 (26) 0.450632
41–60 46 (37) 35 (76) 11 (24) 0.118343
61–80 17 (14) 10 (59) 7 (41) 3.734724
> 81 1 (1) 1 (100) 0 (0) 0.27907
Pseudomonas spp. (n = 24) 0–20 6 (25) 5 (83) 1 (17) 0.093346
21–40 5 (21) 4 (80) 1 (20) 0.00969
41–60 10 (42) 8 (80) 2 (20) 0.01938
61–80 3 (13) 3 (100) 0 (0) 0.837209
> 81 0 (0) 0 (0) 0 (0)
Enterobacter spp. (n = 20) 0–20 5 (25) 4 (80) 1 (25) 0.00969
21–40 5 (25) 3 (60) 2 (67) 0.968992
41–60 5 (25) 2 (40) 3 (150) 4.273256 0.04
61–80 5 (25) 5 (100) 0 (0) 1.395349
> 81 0 (0) 0 (0) 0 (0)
Acinetobacter spp. (n = 8) 0–20 1 (13) 0 (0) 1 (13) 3.583333 0.03
21–40 3 (38) 1 (13) 2 (25) 3.537468 0.03
41–60 1 (13) 1 (13) 0 (0) 0.27907
61–80 2 (25) 1 (13) 1 (13) 0.931202
> 81 1 (13) 1 (13) 0 (0) 0.27907

*only p-values <0.05 are shown