Table 2. Odds ratios for the presence of glaucoma among smokers vs non-smokers of the actual participants in 2005–2006 and 2007–2008 NHANES.
| Unadjusted | Unadjusted | Adjusteda | Adjusteda | |
|---|---|---|---|---|
| Odd Ratio (95% CI) | P-value | Odd Ratio (95% CI) | P-value | |
| Smoking History | ||||
| Ex-smokers vs Non-smokers | 1.31 (0.91–1.88) | 0.15 | 1.15 (0.69–1.92) | 0.59 |
| Current smokers vs Non-smokers | 0.61 (0.41–0.88) | 0.009 | 0.68 (0.41–1.12) | 0.13 |
| Current smokers vs Ex-smokers | 0.46 (0.28–0.76) | 0.002 | 0.59 (0.29–1.20) | 0.14 |
| Among smokers (Ex-smokers and Current smokers): | ||||
| Smoking duration (per year) | 1.02 (0.99–1.05) | 0.16 | 1.00 (0.97–1.02) | 0.82 |
| Smoking amount (per pack/day) | 1.31 (0.98–1.75) | 0.07 | 1.70 (1.08–2.67) | 0.02 |
| Pack-years of smoking | ||||
| First quartile (0.3–4.9 pack-years) | 1 (Reference) | 1 (Reference) | ||
| Second quartile (> 4.9–16.4 pack-years) | 0.89 (0.39–2.04) | 0.79 | 0.59 (0.23–1.55) | 0.29 |
| Third quartile (> 16.4–32.9 pack-years) | 0.88 (0.41–1.89) | 0.74 | 0.74 (0.27–2.04) | 0.56 |
| Fourth quartile (> 32.9 pack-years) | 1.50 (0.66–3.42) | 0.34 | 1.41 (0.44–4.54) | 0.56 |
| Cotinine level (>3ng/ml) | 1.00 (1.00–1.00) | 0.35 | 1.00 (1.00–1.00) | 0.70 |
| Among ex-smokers | ||||
| Interval since quitting smoking (per year) | 1.02 (1.00–1.05) | 0.05 | 0.99 (0.96–1.04) | 0.91 |
a
Adjusted for age, gender, ethnicity, household income, alcohol consumption, diagnosis of diabetes and hypertension. Bold values are statistically significant P-values (i.e. P < 0.05).