Table 2. Characteristics of respondents who had a leftover antimicrobial drug, United Kingdom, 2003*.
| Outcome: respondent had leftover drug originally prescribed for respondent | % (95% CI) | Crude OR† (95% CI) | p value | Adjusted OR† (95% CI) | p value | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Age group, y | ||||||||||
| 16–24 | 3.8 (2.4–6.0) | 0.89 (0.82–0.98) | 0.01 | 0.97 (0.88–1.06) | 0.49 | |||||
| 25–44 | 4.5 (3.7–5.4) | |||||||||
| 45–54 | 4.1 (3.0–5.5) | |||||||||
| 55–64 | 3.9 (2.9–5.3) | |||||||||
| 65–74 | 2.9 (2.0–4.3) | |||||||||
| >75 | 2.1 (1.3–3.5) | |||||||||
| Sex | ||||||||||
| Male | 3.2 (2.6–4.0) | 1 | 1 | |||||||
| Female | 4.4 (3.8–5.2) | 1.38 (1.05–1.82) | 0.02 | 1.22 (0.94–1.57) | 0.14 | |||||
| Education | ||||||||||
| Degree | 5.4 (4.1–7.1) | 1 | <0.0005 | 1 | 0.001 | |||||
| Other | 4.3 (3.6–5.1) | 0.78 (0.56–1.10) | 0.74 (0.54–1.02) | |||||||
| No formal degree | 2.4 (1.8–3.2) | 0.43 (0.29–0.65) | 0.44 (0.29–0.68) | |||||||
| No. questions regarding drugs answered incorrectly | ||||||||||
| 0 | 6.1 (4.7–7.8) | 0.87 (0.79–0.95) | 0.002 | 0.91 (0.84-0.98) | 0.02 | |||||
| 1 | 4.2 (3.1–5.5) | |||||||||
| 2 | 3.4 (2.6–4.5) | |||||||||
| 3 | 4.0 (2.9–5.4) | |||||||||
| 4 | 2.5 (1.6–3.8) | |||||||||
| >5 | 3.1 (2.1–4.5) | |||||||||
| Carstair deprivation score | ||||||||||
| 1st quintile (least deprived) | 4.4 (3.4–5.9) | 1.00 (0.91–1.11) | 0.99 | 1.01 (0.92–1.10) | 0.89 | |||||
| 2nd quintile | 3.9 (2.8–5.5) | |||||||||
| 3rd quintile | 3.4 (2.6–4.6) | |||||||||
| 4th quintile | 3.1 (2.3–4.1) | |||||||||
| 5th quintile (most deprived) | 4.6 (3.6–5.8) | |||||||||
| Prescribed a drug in the past year | ||||||||||
| No | 2.1 (1.7–2.6) | 1 | 1 | |||||||
| Yes | 6.9 (5.9–8.0) | 3.51 (2.66–4.65) | <0.0005 | 3.50 (2.69–4.54) | <0.0005 | |||||
*CI, confidence interval; OR, odds ratio. †For age group, no. of questions regarding drugs answered incorrectly used Carstair deprivation score; the odds ratio is between adjacent categories. The corresponding p value is a test for trend.