Q fever seroprevalence in parturient women: the EQRUN cross-sectional study on Reunion Island

BMC Infectious Diseases

Table 2 Maternal characteristics associated with Q fever seropositivity in bivariate analysis, among 1112 parturient women, Reunion island, January to July 2014

Outcome: *Coxiella burnetii* Phase 2 IgG ≥ 1:64
Exposure variables	n	Crude %	Crude PPR	95% CI	*P value*
Maternity centre					0.146
Level-4, Saint Pierre	127 / 645	19.7	1.21	0.93–1.57
Level-1, Le Tampon	76 / 467	16.3	1
Area of residence					0.563
North or East	1 / 4	25.0	1
West	12 / 55	21.8	0.87	0.14–5.12
South	174 / 939	18.5	0.74	0.13–4.07
Neighbourhood deprivation^a					0.838
Minimum	91 / 477	19.1	1
Intermediate	66 / 346	19.1	1.00	0.75–1.33
High	30 / 175	17.1	0.89	0.61–1.31
Age					0.172
≤ 25 years	81 / 424	19.1	1
26–31 years	50 / 333	15.0	0.79	0.57–1.08
32–47 years	72 / 355	20.3	1.06	0.80–1.41
Place of birth					0.302
Reunion	141 / 771	18.3	1.08	0.74–1.57
Indian ocean	17 / 67	25.4	1.50	0.88–2.57
Metropolitan France	27 / 160	16.9	1
Marital Status					0.076
In couple	125 / 723	17.3	1
Celibacy	60 / 270	22.2	1.29	0.97–1.69
Education					0.349
Primary school	9 / 44	20.5	1.24	0.65–2.33
Middle school	38 / 165	23.0	1.39	0.96–2.02
High school	77 / 383	20.1	1.21	0.88–1.67
University	54 / 327	16.5	1
Occupation					0.421
Unemployed	120 / 601	20.0	1.19	0.90–1.56
Farmer	0 / 2	0.0	NA
Other work	67 / 400	16.7	1
Parity					0.236
Nullipara	77 / 407	18.9	1.17	0.85–1.60
Primipara	55 / 340	16.2	1
Multipara	57 / 264	21.6	1.33	0.95–1.86

Data are numbers, crude seropositive rates (%), crude prevalence proportion ratios (PPR) and 95% confidence intervals (95% CI). NA: not assessed. P values are given for Pearson chi2 tests and not for Wald tests
^aDerived from a homemade social deprivation index categorising the 24 municipalities of the island into tree levels based on three indices: socio-economic composition (three variables) [20]

ISSN: 1471-2334