From: Oral health experiences of individuals with Rett syndrome: a retrospective study
 |  |  | Baseline comparison | |
---|---|---|---|---|
Covariate | Covariate Subcategory | n (%) | Restorations | Extractionsa |
Incidence rate ratio (IRR; (95% CI) p-value) | Incidence rate ratio (IRR; (95% CI) p-value) | |||
ARIA+ | 1 (major cities of Australia) | 146 (61.6) | baseline comparison | |
n = 237 | 2 (inner regional Australia) | 55 (23.2) | (1.40; (0.66–2.97) p = 0.38) | (1.10; (0.61–2.00) p = 0.74) |
3 (outer regional Australia) | 25 (10.6) | (1.64; (0.59–4.52) p = 0.34) | (1.09; (0.47–2.53) p = 0.84) | |
4 (remote Australia/very remote Australia) | 11 (4.6) | (1.86; (0.44–7.82) p = 0.39) | (0.35; (0.1–1.30) p = 0.12) | |
Income | Less than $31,200 | 53 (32.5) | baseline comparison | |
n = 162 | Between $31,200 - $51,999 | 32 (19.6) | (0.94; (0.32–2.79) p = 0.91) | (0.46; (0.21–1.04) p = 0.06) |
Between $52,000 - $77,999 | 26 (15.9) | (0.87; (0.27–2.82) p = 0.81) | (0.24; (0.09–0.62) p = 0.00) | |
$78,000 or more | 52 (31.9) | (0.81; (0.31–2.11) p = 0.67) | (0.36; (0.17–0.73) p = 0.01) | |
Mutation | C-terminal | 22 (9.4) | baseline comparison | |
n = 234 | Early truncating | 16 (6.8) | (1.13; (0.24–5.24) p = 0.88) | (2.06; (0.57–7.47) p = 0.27) |
Large deletion | 17 (7.3) | (0.94; (0.21–4.26) p = 0.94) | (4.93; (1.46–16.7) p = 0.01) | |
p.Arg106Trp | 11 (4.7) | (0.19; (0.02–1.42) p = 0.11) | (2.68; (0.66–10.92) p = 0.17) | |
p.Arg133Cys | 20 (8.6) | (0.68; (0.16–2.84) p = 0.6) | (2.43; (0.73–8.07) p = 0.15) | |
p.Arg168* | 28 (12.0) | (1.13; (0.31–4.16) p = 0.85) | (1.64; (0.53–5.08) p = 0.39) | |
p.Arg255* | 17 (7.3) | (0.27; (0.05–1.45) p = 0.13) | (2.09; (0.58–7.47) p = 0.26) | |
p.Arg270* | 18 (7.7) | (0.77; (0.18–3.38) p = 0.73) | (2.8; (0.83–9.38) p = 0.1) | |
p.Arg294* | 20 (8.6) | (0.68; (0.16–2.88) p = 0.6) | (1.97; (0.59–6.52) p = 0.27) | |
p.Arg306Cys | 14 (6.0) | (0.94; (0.2–4.42) p = 0.94) | (1.17; (0.31–4.5) p = 0.82) | |
p.Thr158Met | 25 (10.7) | (0.82; (0.21–3.21) p = 0.78) | (1.95; (0.61–6.2) p = 0.26) | |
Other | 26 (11.1) | (1.26; (0.39–4.73) p = 0.73) | (1.44; (0.46–4.47) p = 0.53) | |
Epilepsy | No | 42 (17.6) | baseline comparison | |
n = 237 | Yes | 196 (82.4) | (1.39; (0.59–3.26) p = 0.46) | (0.98; (0.51–1.91) p = 0.96) |
Reflux | No | 174 (73.1) | baseline comparison | |
n = 238 | Yes | 64 (26.9) | (0.95; (0.47–1.92) p = 0.88) | (1.04; (0.59–1.83) p = 0.89) |