Table 2a.

Intragroup comparison of salivary calprotectin levels at baseline and 8 weeks posttreatment

Group	Timeline	n	Mean±SD	Mean difference	95% CI of the difference		t	df	P
					Lower	Upper
A1	Baseline	16	95.37±3.48	1.75	0.46	3.03	2.91	15.0	0.01*
	8 weeks	16	93.62±4.33
A2	Baseline	14	94.92±3.66	1.29	0.66	1.90	4.50	13.0	<0.001*
	8 weeks	14	93.64±3.69
B1	Baseline	14	167.07±13.28	2.79	1.74	3.83	5.77	13.0	<0.001*
	8 weeks	14	164.28±11.97
B2	Baseline	16	165.25±11.97	2.56	1.31	3.81	4.39	15.0	<0.001*
	8 weeks	16	162.68±11.17

*Paired t-test; value of P is considered statistically significant P<0.05. P – Probability; SD – Standard deviation; n – Number of participants; df – Degrees of freedom; t – t statistics value; A1 – Patients with periodontitis receiving scaling and root planing; A2 – Patients with periodontitis receiving scaling and root planing as an adjunct to low-level laser therapy; B1 – Patients with periodontitis associated with type 2 diabetes mellitus receiving scaling and root planing; B2 – Patients with periodontitis associated with type 2 diabetes mellitus receiving scaling and root planing as an adjunct to low-level laser therapy; CI – Confidence interval