Table A8.

Reference values for the RPQ scale scores obtained from the Italian general population sample stratified by sex, health status, and age.

	Gender × Health Status × Age				Low Symptom Severity		−1 SD			Md			+1 SD		High Symptom Severity
Scale	Gender	Health status	Age	N	2.5%	5%	16%	30%	40%	50%	60%	70%	85%	95%	97.5%
Somatic	Male	Healthy	18–40	467	0	0	0	0	0	2	2	4	7	14	18
			41–64	454	0	0	0	0	0	2	2	4	8	14	18
			65–75	106	0	0	0	0	0	2	2	4	7	9	10
		At least one chronic health condition	18–40	227	0	0	2	4	5	6	9	12	16	19	23
			41–64	391	0	0	0	2	4	6	7	10	14	21	24
			65–75	125	0	0	0	2	2	4	6	8	10	17	19
	Female	Healthy	18–40	419	0	0	0	2	3	4	5	6	10	16	18
			41–64	403	0	0	0	2	2	4	5	7	11	16	18
			65–75	91	0	0	0	0	0	0	2	4	7	13	14
		At least one chronic health condition	18–40	302	0	0	2	6	7	9	10	13	18	23	25
			41–64	435	0	0	2	5	7	9	11	13	18	23	26
			65–75	129	0	0	2	4	4	6	8	10	15	22	25
			Total	3549	0	0	0	2	2	4	6	8	13	19	22
Emotional	Male	Healthy	18–40	467	0	0	0	0	0	0	2	2	6	9	10
			41–64	454	0	0	0	0	0	0	0	2	6	9	11
			65–75	106	0	0	0	0	0	0	0	0	3	6	7
		At least one chronic health condition	18–40	227	0	0	0	2	4	5	6	7	10	13	15
			41–64	391	0	0	0	0	2	4	5	7	10	12	14
			65–75	125	0	0	0	0	0	2	2	2	6	11	13
	Female	Healthy	18–40	419	0	0	0	0	0	2	4	6	8	11	11
			41–64	403	0	0	0	0	0	0	2	4	8	11	12
			65–75	91	0	0	0	0	0	0	0	0	6	9	10
		At least one chronic health condition	18–40	302	0	0	0	3	6	7	8	9	12	14	16
			41–64	435	0	0	0	2	4	6	7	9	11	13	15
			65–75	129	0	0	0	0	2	4	5	7	9	12	13
			Total	3549	0	0	0	0	0	2	4	6	9	12	13
Cognitive	Male	Healthy	18–40	467	0	0	0	0	0	0	0	0	2	6	7
			41–64	454	0	0	0	0	0	0	0	0	2	6	7
			65–75	106	0	0	0	0	0	0	0	0	2	4	5
		At least one chronic health condition	18–40	227	0	0	0	0	0	2	3	5	7	9	9
			41–64	391	0	0	0	0	0	0	2	4	6	9	10
			65–75	125	0	0	0	0	0	0	2	4	6	9	9
	Female	Healthy	18–40	419	0	0	0	0	0	0	0	2	4	7	9
			41–64	403	0	0	0	0	0	0	0	0	6	7	9
			65–75	91	0	0	0	0	0	0	0	0	4	6	8
		At least one chronic health condition	18–40	302	0	0	0	0	0	2	4	5	7	9	12
			41–64	435	0	0	0	0	0	2	3	6	7	9	9
			65–75	129	0	0	0	0	0	0	2	4	6	9	9
			Total	3549	0	0	0	0	0	0	0	2	6	8	9

Note. 50% percentiles represent 50% of the distribution corresponding to the median (Md); SD: standard deviation; values from −1 standard deviation (16%) to +1 standard deviation (85%) are within the normal range (i.e., not clinically relevant symptom severity); values below 16% indicate low symptoms severity (i.e., absence of RPQ symptoms) and values above 85% indicate high symptom severity (i.e., presence of clinically relevant RPQ symptoms).