Table 2. Prevalence Risk Ratio of ASD and Severe ID by Six Indicators based on Census Unit Data.
Census units were divided into tertiles according to the distribution of each indicator, the first tertile being the least deprived and used as a baseline for the computing of risk ratios.
| 1st tertile | 2nd tertile | 3rd tertile | ||||
|---|---|---|---|---|---|---|
| (n a ) | PRR b | (n) | PRR [95% CI] | (n) | PRR [95% CI] | |
| All ASD | ||||||
| French EDI | (132) | 1 | (150) | 1.14 [0.89–1.46] | (218) | 1.61 [1.28–2.02] |
| % Unemployed | (148) | 1 | (139) | 0.94 [0.73–1.20] | (213) | 1.42 [1.13–1.78] |
| % Workers | (158) | 1 | (182) | 1.16 [0.92–1.46] | (160) | 0.99 [0.78–1.25] |
| % No diploma | (148) | 1 | (179) | 1.20 [0.95–1.52] | (173) | 1.13 [0.89–1.43] |
| % Immigrants | (126) | 1 | (159) | 1.27 [0.99–1.62] | (215) | 1.68 [1.33–2.12] |
| % Single-parent families | (144) | 1 | (151) | 1.05 [0.82–1.34] | (205) | 1.38 [1.10–1.74] |
| ASD without Intellectual Disability (IQ >70) | ||||||
| French EDI | (68) | 1 | (68) | 1.01 [0.71–1.44] | (87) | 1.24 [0.89–1.73] |
| % Unemployed | (74) | 1 | (64) | 0.87 [0.61–1.24] | (85) | 1.13 [0.81–1.58] |
| % Workers | (72) | 1 | (87) | 1.21 [0.87–1.69] | (64) | 0.87 [0.61–1.24] |
| % No diploma | (71) | 1 | (86) | 1.21 [0.87–1.69] | (66) | 0.91 [0.64–1.29] |
| % Immigrants | (60) | 1 | (74) | 1.24 [0.87–1.77] | (89) | 1.44 [1.02–2.04] |
| % Single-parent families | (75) | 1 | (63) | 0.83 [0.58–1.18] | (85) | 1.09 [0.78–1.52] |
| ASD with Intellectual Disability (IQ <70) | ||||||
| French EDI | (62) | 1 | (74) | 1.20 [0.85–1.69] | (120) | 1.89 [1.39–2.58] |
| % Unemployed | (70) | 1 | (70) | 1.00 [0.72–1.41] | (116) | 1.62 [1.20–2.20] |
| % Workers | (77) | 1 | (87) | 1.14 [0.83–1.57] | (92) | 1.16 [0.85–1.59] |
| % No diploma | (69) | 1 | (85) | 1.22 [0.88–1.69] | (102) | 1.43 [1.05–1.96] |
| % Immigrants | (64) | 1 | (79) | 1.23 [0.88–1.73] | (113) | 1.74 [1.27–2.38] |
| % Single-parent families | (65) | 1 | (81) | 1.26 [0.90–1.76] | (110) | 1.66 [1.22–2.28] |
| Severe Intellectual Disability (IQ <50) without ASD | ||||||
| French EDI | (61) | 1 | (63) | 1.06 [0.72–1.55] | (121) | 1.93 [1.38–2.71] |
| % Unemployed | (57) | 1 | (71) | 1.25 [0.85–1.83] | (117) | 1.98 [1.40–2.81] |
| % Workers | (55) | 1 | (87) | 1.65 [1.13–2.39] | (103) | 1.88 [1.31–2.71] |
| % No diploma | (61) | 1 | (79) | 1.32 [0.91–1.92] | (105) | 1.69 [1.19–2.40] |
| % Immigrants | (53) | 1 | (84) | 1.59 [1.09–2.31] | (108) | 2.03 [1.41–2.91] |
| % Single-parent families | (67) | 1 | (66) | 1.00 [0.69–1.46] | (112) | 1.62 [1.16–2.27] |
a n = number of cases in the census unit group defined by tertile of distribution of each indicator in the general population.
b PRR = prevalence risk ratio.