Expression of salivary immunoglobulins and their association with analgesic neuropeptide opiorphin in anorexia nervosa during adolescence

Table 2 Spearman's rank-order correlations between studied parameters in total, AN,and control groups

Variables	Spearman's rank-order correlations
	Total n = 162		AN group n = 83		Control n = 79
	r_s	p value	r_s	p value	r_s	p value
Opiorphin vs. IgA	ns	0.316	0.30	0.006	ns	0.080
Opiorphin vs. IgG	−0.39	< 0.001	−0.54	< 0.001	ns	0.294
Opiorphin vs. IgM	−0.53	< 0.001	−0.54	< 0.001	−0.44	< 0.001
Opiorphin vs. PCR	0.24	0.003	ns	0.509	0.34	0.003
IgA vs. IgG	ns	0.336	ns	0.089	ns	0.560
IgA vs. IgM	−0.28	< 0.001	−0.48	< 0.001	ns	0.529
PCR vs. IgA	0.21	0.007	0.24	0.028	ns	0.229
PCR vs. IgG	0.19	0.017	0.43	< 0.001	0,25	0.024
PCR vs. IgM	−0.45	< 0.001	ns	0.379	−0.42	< 0.001
body mass vs. IgA	ns	0.327	0.28	0.011	ns	0.077
body mass vs. IgM	0.30	< 0.001	−0.26	0.020	ns	0.555
BMI vs. IgA	ns	0.564	0.34	0.002	ns	0.222
BMI vs. IgM	0.30	< 0.001	−0.28	0.011	ns	0.57
IBW vs. IgA	ns	0.683	0.27	0.014	ns	0.991
IBW vs. IgM	0.28	< 0.001	ns	0.104	ns	0.886
age vs. opiorphin	ns	0.830	0.22	0.047	ns	0.091

n number of patients, ns statistically non-significant, PCR Plaque Control Record Index, BMI Body Mass Index, IBW Ideal Body Weight index, vs. versus

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