Table 1.

Births to primiparous women 1986–2002 by employment status, occupation and mode of conception.

Employment status	All		Proportion of occupation subcategory	Conceived with fertility treatmentc
	N	%	%	N	%
All women	128,852	100.0	-	2,058	1.6
Night shift occupations	11,000	8.5	100.0	243	2.2
Registered nurses	6,405	5.0	58.2	157	2.5
Other personal service workers (e.g., croupier)	1,818	1.4	16.5	32	1.8
Enrolled nurses	1,596	1.2	14.5	31	1.9
Police	383	0.3	3.5	11	2.9
Radiographers	209	0.2	1.9	5	2.4
Food processing machine operators	148	0.1	1.3	1	0.7
Actors and related professionals	103	0.1	0.9	0	0.0
Other shift working occupationsa	84	0.1	0.8	2	2.4
Guards & security officers	75	0.1	0.7	2	2.7
Photographic products machine operators	65	0.1	0.6	2	3.1
Securities & finance dealers	62	0.05	0.6	0	0.0
Metal fitters & machinists	52	0.04	0.5	0	0.0
Day work occupations	84,991	66.0	100.0	1,514	1.8
Other clerks	13,071	10.1	15.4	248	1.9
Sales assistants	10,318	8.0	12.1	109	1.1
Teachersb	4,573	3.5	5.4	126	2.8
All other day working occupations	57,029	42.8	67.1	1,031	1.8
Not in paid employment	30,147	25.5	100.0	301	0.9
Home duties	14,419	11.2	47.8	240	1.7
Unemployed	11,835	9.2	39.3	32	0.3
Students	3,416	2.7	11.3	14	0.4
Pensioners	477	0.4	1.5	3	0.6
Unknown occupation	2,714	2.1	100.0	12	0.4

^aData combined for shift working occupations where n < 30 (air transport operating support workers, prison officers, production recording clerks, other stationary plant operators, fabric production machine operators).

^bIncludes pre-primary, primary, secondary and extra-systematic teachers, but not tertiary teachers.

^cCouples who accessed fertility treatment for any diagnosis other than male factor infertility only.