Table 1.
Antibiotic Resistance of E. coli Strains Isolates from Urine of Pregnant and Non-Pregnant Women from Sonora and Puebla, Mexico
| Antibioticsa | Sonora (n=100) pb = 0.840 | Puebla (n=50) pb = 0.946 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pregnant n=50 n (%) | Average %R | Non-Pregnant n=50 n (%) | Average %R | pc value | Pregnant n=25 n (%) | Average %R | Non-Pregnant n=25 n (%) | Average %R | pc value | |
| AMK | 31 (62) | 38 | 32 (64) | 37.3 | 1 | 24 (96) | 58.7 | 19 (76) | 45.3 | 0.098 |
| GM | 21 (42) | 22 (44) | 1 | 14 (56) | 10 (40) | 0.396 | ||||
| NET | 5 (20) | 2 (4) | 0.436 | 4 (24) | 5 (20) | 1 | ||||
| AMP | 50 (100) | 72.9 | 50 (100) | 78.9 | – | 100 (25) | 82.2 | 25 (100) | 77.3 | – |
| CF | 48 (96) | 49 (98) | 1 | 24 (96) | 25 (100) | 1 | ||||
| CFX | 41 (82) | 50 (100) | 0.002 | 25 (100) | 23 (92) | 0.489 | ||||
| CTX | 35 (70) | 47 (94) | 0.003 | 20 (80) | 20 (80) | 1 | ||||
| CFZ | 37 (74) | 33 (66) | 0.513 | 21 (84) | 19 (76) | 0.725 | ||||
| CRO | 41 (82) | 50 (100) | 0.002 | 24 (96) | 24 (96) | 1 | ||||
| FEP | 19 (38) | 14 (28) | 0.395 | 8 (32) | 6 (24) | 0.753 | ||||
| ATM | 20 (40) | 15 (30) | 0.401 | 15 (60) | 11 (44) | 0.396 | ||||
| AMC | 37 (74) | 47 (94) | 0.012 | 23 (92) | 22 (84) | 0.667 | ||||
| NA | 37 (74) | 60 | 37 (74) | 44.8 | 1 | 17 (68) | 44 | 18 (72) | 56 | 1 |
| CIP | 29 (58) | 22 (44) | 0.229 | 10 (40) | 13 (52) | 0.570 | ||||
| OFX | 27 (54) | 18 (36) | 0.107 | 12 (48) | 14 (56) | 0.777 | ||||
| NOR | 28 (56) | 19 (38) | 0.108 | 13 (32) | 14 (56) | 0.153 | ||||
| LVX | 29 (58) | 16 (32) | 0.015 | 13 (32) | 11 (44) | 0.560 | ||||
| NF | 20 (40) | 40 | 41 (82) | 82 | <0.001 | 16 (64) | 64 | 17 (68) | 68 | 1 |
| TSX | 32 (64) | 64 | 35 (70) | 70 | 0.670 | 11 (44) | 44 | 17 (68) | 68 | 0.153 |
| FOS | 2 (4) | 4 | 2 (4) | 4 | 1 | 5 (20) | 20 | 1 (4) | 4 | 0.189 |
| C | 30 (60) | 70 | 25 (50) | 50 | 0.421 | 9 (36) | 36 | 11 (44) | 44 | 0.773 |
| TE | 35 (70) | 70 | 29 (58) | 58 | 0.032 | 13 (52) | 52 | 18 (72) | 72 | 0.243 |
| ETP | 6 (12) | 12 | 4 (8) | 8 | 0.740 | 5 (20) | 20 | 0 (0) | 0 | 0.050 |
Notes: pb, two samples t-test; pc, Fisher test exact; –, the value of p could not be obtained; n, number of strains; %, percentage; R, resistance; statistically significant values are in bold.
Abbreviations: AMK, amikacine; GM, gentamicin; NET, netilmicine; AMP, ampicillin; CF, cephalotin; CFX, cefuroxime; CTX, cephotaxime; CFZ, cefazolin; CRO, cephtriaxone; FEP, cephepime; ATM, Aztreonam; AMC, clavulanic acid-ampicillin; NA, nalidixic acid; CIP, ciprofloxacin; OFX, ofloxacin; NOR, norfloxacin; LVX, levofloxacine; NF, nitrofurantoin; TSX, trimethoprim/sulfamethoxazole; FOS, fosfomycin; C, chloramphenicol; TE, tetracycline; ETP, Ertapenem.