Table 1.

Mean±Standard deviation (SD) of different study variables in cases and controls

Variable	Cases	Controls	P-value*
	Mean±SD	Mean±SD
Clinical attachment loss (CAL)	1.36±1.25	0.74±0.85	<0.0001# (Sig)
Bleeding Index (BI)	44.60±30.68	37.01±27.49	0.32# (NS)
Probing pocket depth (PPD)	3.12±1.02	2.83±1.00	0.03# (Sig)
Oral hygiene index (OHI)	2.95±1.22	2.35±1.13	<0.0001 (Sig)
Extent 2 (E2)	40.25±32.09	23.62±26.03	0.001# (Sig)
Extent 3 (E3)	23.71±29.31	11.88±18.30	0.004# (Sig)
Extent 4 (E4)	11.10±22.88	3.28±9.97	0.02# (Sig)
Severity 2 (S2)	1.53±0.89	1.21±0.83	0.007 (Sig)
Severity 3 (S3)	1.84±1.25	1.38±1.19	0.006 (Sig)
Severity 4 (S4)	1.42±1.79	0.98±1.59	0.07# (NS)
Age	23.5±3.9	23.2±3.7	0.55 (NS)
Hemoglobin	Hemoglobin	9.82±1.29	0.03 (Sig)

^*P-values were calculated by using Student independent t test,

# Since variables were highly skewed, values were log transformed before using student independent t test.