Table 3.

Proportions of respondents reporting health changes by intensity of exposure

Delayed health issues categories	Participants reporting health issues by intensity of exposure						Test of trend
	1 day of exposure N = 398		2–4 days of exposure N = 1391		≥5 days of exposure N = 468
	n	%a	n	%a	n	%a	p value	Z value
Any physical or psychological health issues	309	77.6	1215	87.3	420	89.7	< 0.01	− 3.8
Any physical health issuesa	290	72.9	1126	80.9	407	87	< 0.01	−4.7
Eye	91	22.9	356	25.6	147	31.4	< 0.01	−3.0
Nose	62	15.6	257	18.5	118	25.2	< 0.01	−3.8
Mouth	59	14.8	232	16.7	87	18.6	0.16	−1.4
Lungs and/or Chest	126	31.7	648	46.6	289	61.8	< 0.01	−8.3
Skin	57	14.3	294	21.1	144	30.8	< 0.01	−5.8
Gastrointestinal	77	19.3	358	25.7	203	43.4	< 0.01	−8.5
Head	91	22.9	385	27.7	150	32.1	< 0.01	−2.8
Menstrualb	116	39.7	566	54.8	217	66.6	< 0.01	−6.0
Psychological health issues	204	51.3	1041	74.8	390	83.3	< 0.01	−8.2

^a Total count for the delayed physical issues includes menstrual health/breast/chest health

^b Denominators for exposure of 1 day, 2–4 days, and ≥ 5 days were 292; 1032, 326, respectively, because of the eligibility criteria for this outcome (see Table 4 for details)