Table 2.
Univariate associations for IID symptom severity and sickness absence outcomes (IID2 study 2008–9)
| Severe symptoms versus mild or moderate symptoms combined OR (95%CI) |
Sickness absence versus no sickness absence OR (95%CI)a |
|
|---|---|---|
| Cases with complete data ≥5 years of age (n = 1164) |
Cases with complete data school/working age (n = 818) |
|
| Age group (years) | ||
| 5–14 | reference | |
| 15–24 | 2.88 (1.59–5.31) | |
| 25–44 | 0.99 (0.68–1.45) | |
| 45–64 | 0.70 (0.49–1.01) | |
| 65+ | 0.60 (0.41–0.89) | |
| Age (years) | 0.98 (0.97–0.99) | |
| Sex | ||
| Female | reference | reference |
| Male | 0.92 (0.74–1.14) | 0.94 (0.70–1.25) |
| Ethnicity | ||
| White | reference | reference |
| Non-White | 2.27 (1.28–4.10) | 3.13 (1.38–8.41) |
| NS-SEC | ||
| Managerial/professional | reference | reference |
| Intermediate | 1.21 (0.92–1.61) | 1.13 (0.78–1.66) |
| Routine/manual | 2.18 (1.67–2.86) | 1.77 (1.22–2.58) |
| Residence | ||
| Urban | reference | reference |
| Rural | 0.82 (0.65–1.03) | 0.98 (0.71–1.34) |
| Travelled before illness | ||
| No | reference | reference |
| Yes | 1.21 (0.88–1.66) | 0.66 (0.44–0.99) |
| Symptom severity | ||
| Mild | reference | |
| Moderate | 3.88 (2.75–5.51) | |
| Severe | 5.99 (4.07–8.95) | |
CI confidence interval, IID infectious intestinal disease, NS-SEC National Statistics Socioeconomic Classification, OR odds ratio
aSince the absence outcome was common, the odds ratios should not be interpreted as risk ratios