Table 3.

Etiological Changes in PLAs

	Total (n=402)	16–17 (n=102)	18–19 (n=124)	20–21 (n=176)	P-value
Pathogen culture positive	200(49.8%)	50(49.0%)	62(50.0%)	88(50.0%)	0.985
Klebsiella pneumoniae	141(70.5%)	30(60.0%)	39(62.9%)	72(81.8%)	0.007
E. coli	29(14.5%)	13(26.0%)	12(19.3%)	4(4.5%)	0.001
Bacaeroides fragilis	3(1.5%)	0	0	3(3.4%)
Aerobacter cloacae	5(2.5%)	1(2.0%)	2(3.2%)	2(2.3%)	0.903
Staphylococcus aureus	1(0.5%)	0	1(1.6%)	0
Streptococcus gri	1(0.5%)	1(2.0%)	0	0
Enterococcus faecium	5(2.5%)	2(4.0%)	1(1.6%)	2(2.3%)	0.712
Staphylococcus haemolytica	2(1%)	1(2.0%)	0	1(1.1%)
Streptococcus anginosus	3(1.5%)	1(2.0%)	1(1.6%)	1(1.1%)	0.919
Grass green hemolytic streptococcus	2(1%)	0	2(3.2%)	0
Peptostreptococcus anaerobius	3(1.5%)	3(6.0%)	0	0
Peptostreptococcus	1(0.5%)	1(2.0%)	0	0
Staphylococcus epidermidis	1(0.5%)	0	0	1(1.1%)
Streptococcus mitis	2(1%)	0	0	2(2.3%)
Streptococcus intermediates	2(1%)	0	1(1.6%)	1(1.1%)
Streptococcus constellatus	1(0.5%)	0	0	1(1.1%)