Table 2. Toxoplasmosis seroprevalence by demographic factor and stratified by self-reported nationality, as recorded by national perinatal survey, France, 2016 (n = 13,173).

Demographics	French women				North African women				Sub-Saharan African women
	Seroprevalence		aPR	95% CI	Seroprevalence		aPR	95% CI	Seroprevalence		aPR	95% CI
	n/N	%			n/N	%			n/N	%
Age (years)
< 20	31/158	19.6	0.59	0.41‒0.83	NA	NA	NA	NA	16/22	72.7	1.19	0.89–1.60
20–24	205/1,249	16.4	0.50	0.44–0.57	17/57	29.8	0.72	0.46–1.13	40/83	48.2	0.93	0.69–1.24
25–29	794/3,341	23.8	0.73	0.67–0.78	55/180	30.6	0.78	0.59–1.04	68/156	43.6	0.93	0.72–1.20
30–35	1,203/3,606	33.4	Ref	NA	71/179	39.7	Ref	NA	70/160	43.8	Ref	NA
35–39	708/1,732	40.9	1.20	1.11–1.29	62/132	47.0	1.16	0.90–1.50	52/88	59.1	1.43	1.12–1.84
≥ 40	210/395	53.2	1.54	1.39–1.70	22/35	62.9	1.50	1.10–2.05	13/22	59.1	1.27	0.87–1.86
Professional status of household
Without a profession	62/238	26.1	1.03	0.82–1.28	10/27	37.0	1.09	0.63–1.89	22/37	59.5	1.21	0.84–1.75
Manual	171/695	24.6	0.98	0.86–1.13	55/135	40.7	1.25	0.90–1.75	29/69	42.0	0.84	0.58–1.21
Employee	788/2,942	26.8	0.99	0.91–1.07	68/158	43.0	1.24	0.91–1.70	78/192	40.6	0.89	0.66–1.20
Intermediate professional	1,012/3,410	29.7	Ref	NA	37/106	34.9	Ref	NA	31/68	45.6	Ref	NA
Higher professional	754/2,052	36.7	1.12	1.04–1.21	18/66	27.3	0.89	0.56–1.41	13/33	39.4	0.92	0.56–1.50
Farmer/ commerce	334/1,047	31.9	1.08	0.98–1.19	3277	41.6	1.29	0.89–1.87	58/88	65.9	1.05	0.77–1.43
ZEAT
East	149/798	18.7	0.67	0.57–0.79	13/28	46.4	1.07	0.67–1.73	9/14	64.3	1.76	1.05–2.94
Centre-east	327/1,334	24.5	0.84	0.75–0.95	24/62	38.7	0.84	0.54–1.31	12/24	50.0	1.43	0.82–2.48
West	401/1,453	27.6	0.97	0.87–1.09	12/24	50.0	1.14	0.68–1.89	13/28	46.4	1.37	0.80–2.33
North	213/766	27.8	1.05	0.92–1.21	3/36	8.3	0.07	0.01–0.51	2/8	25.0	0.83	0.24–2.90
Paris basin	471/1,730	27.2	Ref	NA	23/56	41.1	Ref	NA	18/51	35.3	Ref	NA
Mediterranean	339/1,007	33.7	1.16	1.03–1.30	30/86	34.9	0.79	0.52–1.20	7/14	50.0	1.31	0.66–2.61
South-west	343/968	35.4	1.21	1.08–1.36	24/46	52.2	1.14	0.76–1.71	12/24	50.0	1.42	0.81–2.48
Paris	706/1,940	36.4	1.19	1.08–1.31	96/238	40.3	0.96	0.69–1.34	88/238	37.0	1.01	0.67–1.50
Overseas departmentsa	191/440	43.4	1.59	1.39–1.82	NA	NA	NA	NA	97/128	75.8	2.11	1.43–3.12

aPR: adjusted prevalence ratio ; CI: confidence interval; Ref: reference category used in the analysis; ZEAT: zones d’étude et d’aménagement du territoire (study and regional planning zone, equivalent to Nomenclature of territorial units for statistics level 1 (NUTS 1)).

Values in bold represent a significant difference p < 0.05.

Only variables which were statistically significant on MVA for any of the strata are shown.

^a Guadeloupe, French Guyana, La Réunion, Martinique and Mayotte combined.