Table 2. Incidence Rate Ratios for GP Recorded Anxiety Diagnoses.
| Variable | No. of Events | PYAR | Incidence(95% CI) | Univariable* IRR(95% CI) | P-Value+ | Multivariable* ∧ IRR(95% CI) | P-Value+ | |
| Year | 1998 | 6941 | 879491 | 7.9 (7.7,8.1) | Baseline | <0.0001 | Baseline | <0.0001 |
| 1999 | 8328 | 1143029 | 7.3 (7.1,7.4) | 0.92 (0.84,1.01) | 0.93 (0.85,1.02) | |||
| 2000 | 10730 | 1499653 | 7.2 (7.0,7.3) | 0.91 (0.82,1.00) | 0.92 (0.83,1.01) | |||
| 2001 | 11521 | 1776784 | 6.5 (6.4,6.6) | 0.82 (0.74,0.92) | 0.84 (0.75,0.93) | |||
| 2002 | 12518 | 2060714 | 6.1 (6.0,6.2) | 0.77 (0.68,0.86) | 0.79 (0.70,0.88) | |||
| 2003 | 13586 | 2291800 | 5.9 (5.8,6.0) | 0.75 (0.66,0.85) | 0.77 (0.68,0.87) | |||
| 2004 | 13495 | 2440041 | 5.5 (5.4,5.6) | 0.70 (0.62,0.80) | 0.72 (0.64,0.82) | |||
| 2005 | 13488 | 2598986 | 5.2 (5.1,5.3) | 0.66 (0.58,0.75) | 0.68 (0.60,0.78) | |||
| 2006 | 13523 | 2718023 | 5.0 (4.9,5.1) | 0.63 (0.55,0.72) | 0.65 (0.57,0.75) | |||
| 2007 | 12963 | 2768774 | 4.7 (4.6,4.8) | 0.59 (0.52,0.68) | 0.62 (0.54,0.70) | |||
| 2008 | 6322 | 1301973 | 4.9 (4.7,5.0) | 0.62 (0.54,0.71) | 0.64 (0.56,0.73) | |||
| TOTAL | 123415 | 21479269 | 5.7 (5.7,5.8) | |||||
| Gender | Male | 40628 | 10341390 | 3.9 (3.9,4.0) | Baseline | <0.0001 | Baseline | <0.0001 |
| Female | 82787 | 11137879 | 7.4 (7.4,7.5) | 1.89 (1.85,1.94) | 1.92 (1.87,1.97) | |||
| Age group | 16 to 24 | 10567 | 2739664 | 3.9 (3.8,3.9) | Baseline | <0.0001 | Baseline | <0.0001 |
| 25 to 44 | 46697 | 7870402 | 5.9 (5.9,6.0) | 1.54 (1.48,1.60) | 1.56 (1.50,1.62) | |||
| 45 to 64 | 41242 | 63331832 | 6.5 (6.5,6.6) | 1.69 (1.61,1.77) | 1.73 (1.65,1.82) | |||
| 65 to 74 | 12856 | 2235334 | 5.8 (5.7,5.9) | 1.49 (1.40,1.59) | 1.49 (1.40,1.58) | |||
| 75+ | 12053 | 2302038 | 5.2 (5.1,5.3) | 1.36 (1.26,1.47) | 1.29 (1.20,1.40) | |||
| Deprivation | Missing | 4722 | 1801970 | 2.6 (2.5,2.7) | Excluded | Excluded | ||
| (Least Deprived) | Q1 | 27311 | 5075427 | 5.4 (5.3,5.4) | Baseline | <0.0001 | Baseline | <0.0001 |
| Q2 | 23452 | 4430050 | 5.3 (5.2,5.4) | 0.98 (0.92,1.05) | 0.99 (0.93,1.06) | |||
| Q3 | 23641 | 4153536 | 5.7 (5.6,5.8) | 1.06 (0.98,1.14) | 1.08 (1.00,1.16) | |||
| Q4 | 23807 | 3610922 | 6.6 (6.5,6.7) | 1.23 (1.11,1.35) | 1.26 (1.15,1.39) | |||
| (Most Deprived) | Q5 | 20482 | 2407364 | 8.5 (8.4,8.6) | 1.58 (1.37,1.82) | 1.65 (1.44,1.90) |
*
Standard Errors Adjusted For Practice;
+
P-value based on Wald test.
∧
Mutually adjusted for period, gender, age and deprivation and for clustering by practice using robust standard errors.