Age adjusted odds ratios (OR) of developing neovascular form of AMD according to smoking related variables
| Patients | Controls | OR | 95% CI | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| N | % | N | % | ||||||||
| Non-smokers | 7 | 12.5 | 24 | 29.6 | 1.00 | ||||||
| Use of extra filter: | |||||||||||
| Regularly/sometimes | 10 | 17.9 | 17 | 21.5 | 1.50 | (0.43–5.26) | |||||
| Never | 39 | 69.6 | 38 | 48.1 | 3.07 | (1.09–8.63) | |||||
| Inhalation: | |||||||||||
| Not deeply | 32 | 57.1 | 49 | 60.5 | 1.95 | (0.70–5.42) | |||||
| Deeply | 17 | 30.4 | 8 | 9.9 | 5.41** | (1.52–19.31) | |||||
| Age (years) at starting smoking: | |||||||||||
| 21∼ | 14 | 25.0 | 27 | 33.8 | 1.49 | (0.47–4.65) | |||||
| ∼20 | 35 | 62.5 | 29 | 36.3 | 3.41 | (1.20-9.73) | |||||
| trend p<0.05 | |||||||||||
| Duration of smoking (years): | |||||||||||
| ∼29 | 13 | 23.2 | 23 | 28.8 | 1.86 | (0.59–5.84) | |||||
| 30∼39 | 16 | 28.6 | 23 | 28.8 | 2.38 | (0.77–7.35) | |||||
| 40∼ | 20 | 35.7 | 10 | 12.5 | 3.79 | (1.13–12.70) | |||||
| trend p<0.05 | |||||||||||
| Brinkman index: | (numbers of cigarette per day × smoking years) | ||||||||||
| ∼700 | 22 | 39.3 | 36 | 45.0 | 1.84 | (0.64–5.33) | |||||
| 701∼ | 27 | 48.2 | 20 | 25.0 | 3.66 | (1.22–10.97) | |||||
| trend p<0.05 | |||||||||||
Totals may differ because of missing information.
↵p<0.05, **p<0.01.