Table 3. Adjusted mortality rates by age group, gender calendar year, social deprivation, and smoking.
| Events | Person-years (1000) | aAdjusted mortality rate (95% CI) | P value | Events | Person-years (1000) | aAdjusted mortality rate (95% CI) | P value | Mortality rate ratio | bP value | cP value | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Age group, y | |||||||||||
| 50–59 | 14 | 2.09 | 6.98 (3.0 to 10.97) | <0.001 | 51 | 10.63 | 4.46 (3.30 to 5.62) | <0.001 | 1.48 (0.80 to 2.76) | 0.212 | 0.474 |
| 60–69 | 107 | 7.74 | 14.20 (11.30 to 17.09) | 521 | 38.41 | 13.04 (11.81 to 14.27) | 1.08 (0.87 to 1.33) | 0.497 | |||
| 70–79 | 571 | 14.95 | 39.57 (35.98 to 43.16) | 2537 | 74.70 | 33.53 (31.90 to 35.16) | 1.17 (1.07 to 1.28) | 0.001 | |||
| 80–89 | 1052 | 10.34 | 105.75 (98.78 to 112.71) | 4813 | 53.35 | 92.91 (89.23 to 96.59) | 1.14 (1.07 to 1.22) | <0.001 | |||
| >90 | 287 | 1.09 | 285.69 (250.05 to 321.32) | 1245 | 5.97 | 223.98 (209.40 to 238.55) | 1.28 (1.12 to 1.45) | <0.001 | |||
| Gender | |||||||||||
| Male | 1288 | 21.65 | 65.99 (61.77 to 70.20) | <0.001 | 5792 | 109.53 | 54.76 (52.41 to 57.12) | <0.001 | 1.18 (1.11 to 1.25) | <0.001 | 0.452 |
| Female | 743 | 14.58 | 51.82 (47.48 to 56.17) | 3375 | 73.39 | 44.71 (42.67 to 46.74) | 1.14 (1.06 to 1.23) | 0.001 | |||
| Townsend quintile | |||||||||||
| 1 (least deprived) | 510 | 10.37 | 55.65 (50.21 to 61.09) | 0.0197 | 1939 | 47.19 | 44.25 (41.53 to 46.98) | <0.001 | 1.24 (1.13 to 1.37) | <0.001 | 0.323 |
| 2 | 482 | 8.54 | 58.85 (53.02 to 64.68) | 2023 | 41.57 | 48.77 (45.90 to 51.64) | 1.19 (1.08 to 1.32) | 0.001 | |||
| 3 | 404 | 6.69 | 66.03 (59.30 to 72.75) | 1919 | 35.70 | 53.56 (50.29 to 56.83) | 1.19 (1.08 to 1.32) | 0.001 | |||
| 4 | 291 | 5.05 | 61.08 (53.75 to 68.40) | 1630 | 27.52 | 56.51 (52.48 to 60.54) | 1.04 (0.92 to 1.18) | 0.497 | |||
| 5 (most deprived) | 210 | 3.0 | 67.88 (57.89 to 77.87) | 1049 | 17.67 | 59.36 (54.55 to 64.17) | 1.09 (0.94 to 1.26) | 0.246 | |||
| Missing data | 134 | 607 | |||||||||
| Smoking status | |||||||||||
| Non-smoker | 1035 | 20.40 | 53.87 (50.24 to 57.50) | <0.001 | 3649 | 82.57 | 44.21 (42.10 to 46.32) | <0.001 | 1.18 (1.11 to 1.26) | <0.001 | 0.086 |
| Ex-smoker | 716 | 10.76 | 65.14 (59.85 to 70.43) | 3450 | 60.03 | 54.02 (51.62 to 56.43) | 1.19 (1.10 to 1.28) | <0.001 | |||
| Current smoker | 149 | 2.50 | 74.24 (61.70 to 86.78) | 1378 | 23.88 | 74.74 (69.82 to 79.66) | 0.96 (0.80 to 1.13) | 0.604 | |||
| Missing data | 131 | 690 |
Abbreviations: PD, Parkinson’s disease; CI, confidence interval, y, years.
a
Adjusted for age, gender calendar year, social deprivation, and smoking.
b
Wald test for categorical variable.
c
Wald test for multiplicative interaction.