Table V.

SCA rates of all 24 chromosomes between formaldehyde-exposed and control groups^a

Chromosome	IRRb	95% CIc	P-value
5	4.15	1.20–14.35	0.024
1	3.68	0.83–16.25	0.086
22	0.49	0.14–1.67	0.25
2	0.48	0.14–1.71	0.26
15	2.16	0.54–8.60	0.27
4	2.00	0.52–7.61	0.31
10	1.63	0.45–5.92	0.46
8	0.70	0.26–1.85	0.47
6	1.72	0.29–10.06	0.55
20	0.37	0.01–17.06	0.61
7	1.29	0.45–3.75	0.64
16	1.36	0.34–5.52	0.67
17	1.23	0.48–3.19	0.67
3	1.26	0.34–4.65	0.73
19	1.18	0.41–3.38	0.75
13	1.77	0.00–1015	0.86
18	0.91	0.30–2.76	0.87
11	0.86	0.08–8.90	0.90
X (M)d	0.94	0.28–3.12	0.92
12	1.08	0.17–6.77	0.94
9	0.96	0.28–3.35	0.95
14	0.92	0.07–11.60	0.95
21	1.00	0.21–4.84	1.00
Y	0.87	NA	1.00

^aData listed according to P-values.

^bIRR, adjusted for age and sex, except for sex in the analysis of X and Y chromosomes.

^c95% confidence interval.

^dX chromosome in males.