Table 2

Nasal symptoms, clinical score of the nasal mucosa, and exposure status of 52 workers exposed to sulphuric acid mists

No.	Age (y)	Smoking (1)	Nasal symptoms (2)	Allergic symptoms (3)	Clinical score (4)	ExpoT (5)	ExpoV   (μg/m³) (6)	Plant
No. 1–20: workers selected for the histopathological study.
(1) S, smoker; NS, non-smoker.
(2) N, no symptom.
(3) N, no; Y, yes.
(4) 1 = normal, 2 = hyperplastic turbinates, 3 = hyperaemia, 4 = pale mucosal patches, 5 = ulceration, 6 = septum perforation.
(5) Exposure duration in years and months.
(6) Sulphuric acid air concentration.
1	39	S	N	N	5	13 y 11 m	580.2	A
2	23	NS	Itching, epistaxis, rhinorrhoea, sneezing	N	5	1 y 6 m	580.2	A
3	42	NS	N	N	4	2 y 8 m	338.9	A
4	22	S	Epistaxis	N	5	2 y 6 m	580.2	A
5	27	NS	Epistaxis	N	4	5 y 9 m	580.2	A
6	42	S	Itching, sneezing	Y	5	5 y	580.2	A
7	42	NS	N	N	4	3 y 9 m	580.2	A
8	43	S	N	N	5	6 y	580.2	A
9	40	NS	N	N	4	2 y 2 m	2133.6	E
10	29	NS	Itching, rhinorrhoea	N	1	7 y 9 m	580.2	A
11	27	NS	N	N	3	14 y 4 m	580.2	A
12	57	S	N	N	4	7 y 8 m	580.2	A
13	39	NS	Itching	N	4	15 y	580.2	A
14	31	NS	Epistaxis	N	3	13 y	580.2	A
15	29	NS	Epistaxis	Y	4	2 y 10 m	580.2	A
16	39	S	N	N	4	7 y 1 m	338.9	D
17	21	NS	N	N	3	1 y 4 m	2133.6	E
18	39	S	N	N	3	3 y 2 m	34.7	B
19	30	S	Itching	Y	1	7 y 9 m	60.45	C
20	34	S	N	N	1	6 y	60.45	C
21	26	S	N	N	3	2 y 1 m	60.45	C
22	27	NS	Itching, rhinorrhoea	N	3	5 y 10 m	60.45	C
23	30	NS	N	N	1	6 y 8 m	60.45	C
24	29	S	Itching, rhinorrhoea	N	3	4 m	60.45	C
25	34	NS	N	N	2	6 y 5 m	60.45	C
26	25	NS	N	N	1	4 m	60.45	C
27	31	S	N	N	1	1 y 5 m	60.45	C
28	38	NS	N	N	2	4 y 11 m	60.45	C
29	46	NS	N	N	2	2 y 2 m	60.45	C
30	30	NS	N	N	3	5 y 8 m	34.7	B
31	30	S	Epistaxis	N	3	3 y 8 m	34.7	B
32	59	S	N	N	1	12 y 8 m	34.7	B
33	23	NS	N	N	1	2 y 8 m	580.2	A
34	30	NS	N	N	4	8 y 2 m	580.2	A
35	54	NS	N	N	1	9 m	580.2	A
36	25	NS	Itching, rhinorrhoea, epistaxis	Y	5	1 y 4 m	580.2	A
37	19	NS	Itching, obstruction	N	4	1 y 4 m	580.2	A
38	27	S	N	N	4	6 y 4 m	580.2	A
39	21	NS	Epistaxis	N	3	unknown	580.2	A
40	34	S	N	N	1	1 y 9 m	580.2	A
41	25	NS	Itching, rhinorrhoea, sneezing, burning	N	2	5 y 1 m	580.2	A
42	27	S	Itching, epistaxis	N	4	14 y 11 m	580.2	A
43	25	S	Itching, hyposmia, epistaxis, rhinorrhoea	Y	4	4 y 9 m	580.2	A
44	27	S	N	N	3	8 y 2 m	580.2	A
45	39	NS	N	N	6	14 y 7 m	580.2	A
46	20	S	Itching, obstruction	N	3	1 y 8 m	580.2	A
47	33	NS	Itching, epistaxis	N	3	7 y 11 m	580.2	A
48	40	S	Itching, sneezing	N	3	1 y 3 m	338.9	D
49	46	NS	N	N	3	10 y 3 m	338.9	D
50	39	NS	N	N	3	9 y 7 m	2133.6	E
51	30	NS	N	N	4	1 y 4 m	2133.6	E
52	46	NS	N	N	4	16 y	2133.6	E