Table 5.
Differences in Health Care utilization for somatic disorders of patients with NAPD compared to matched controls by stratum of age and duration since earliest date of registered diagnosis; percentage, average marginal effect (AME)a and 95 % confidence interval
| Diagnosis | Number of patients/number of controls | % ≥1 DTP with somatic diagnosis Patients with NAPD versus controls |
% with any somatic HCu Patients with NAPD versus controls |
||||||
|---|---|---|---|---|---|---|---|---|---|
| % | % | Average marginal effect | 95 % CI | % | % | Average marginal effect | 95 % CI | ||
| Age & duration | |||||||||
| <40 years | |||||||||
| <2 years | 223/1320 | 37.4 | 38.6 | −1.15 | −8.89 to 6.59 | 85.2 | 81.7 | 3.64 | −3.07 to 10.34 |
| 2–5 | 222/1314 | 38.1 | 38.2 | −0.02 | −7.90 to 7.86 | 85.6 | 81.2 | 4.54 | −2.25 to 11.33 |
| ≥5 | 384/2304 | 34.4 | 37.8 | −3.39 | −9.74 to 2.97 | 80.5 | 81.9 | −1.53 | −8.43 to 5.35 |
| 40–60 years | |||||||||
| <2 years | 203/1224 | 45.1 | 47.9 | −2.80 | −11.01 to 5.41 | 87.9 | 86.1 | 1.18 | −4.29 to 7.91 |
| 2–5 | 294/1770 | 33.2 | 47.4 | −14.27*** | −20.87 to −7.67 | 80.6 | 86.5 | −5.79 | −12.1 to 0.55 |
| ≥5 | 567/3390 | 36.9 | 46.6 | −9.71** | −15.18 to −4.24 | 81.6 | 86.1 | −4.68 | −10.07 to 0.71 |
| >60 years | |||||||||
| <2 years | 154/934 | 58.4 | 66.2 | −7.60 | −16.20 to 0.98 | 91.6 | 92.5 | −0.70 | −5.49 to 4.09 |
| 2–5 | 123/750 | 58.9 | 65.7 | −6.66 | −16.27 to 2.94 | 88.5 | 91.2 | −2.23 | −8.44 to 3.98 |
| ≥5 | 222/1344 | 47.5 | 64.2 | −16.61*** | −24.10 to −9.12 | 80.6 | 93.1 | −10.99*** | −17.02 to −4.97 |
| Effect of interaction between stratum (age & duration) and patient versus control (df = 8) | p = 0.0047 | p < 0.001 | |||||||
Adjusted for gender, ethnic minority, depression, personality disorder, alcohol and drug abuse/dependence
aDifference in percentages of HCu between patients and controls computed as average marginal effect
* p < 0.05, ** p < 0.01, *** p < 0.001