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Table 3 Linear regression analysis for time from request to diagnosis (days) and characteristics of sample population

From: Waiting times for diagnosis of attention-deficit hyperactivity disorder in children and adolescents referred to Italian ADHD centers must be reduced

Parameter

 

Estimated waiting time (days)

[mean (CI 95%)]

p-value a

Intercept

 

18.4 (−38.5–75.2)

0.5264

Age at diagnosis

9–17 years vs 5–8 years

20.8 (10.0–31.5)

0.0001

Sex

Female vs Male

1.8 (−12.8–16.4)

0.8092

Only child

No vs Yes

5.2 (−7.0–17.5)

0.4022

Born abroad

No vs Yes

0.6 (−30.4–31.6)

0.9701

Adopted

No vs Yes

15.5 (−20.9–51.8)

0.4048

School repetear

No vs Yes

2.5 (−25.8–30.8)

0.8634

Support teacher at school

No vs Yes

4.3 (−14.3–22.9)

0.6508

Family history of ADHD

Yes vs No

3.3 (−11.1–17.8)

0.6507

Born preterm or low weight

No vs Yes

7.0 (−10.4–24.5)

0.4285

Motor delay

No vs Yes

16.5 (−8.2–41.1)

0.1899

Language delay

Yes vs No

15.8 (1.9–29.8)

0.0262

Referred by another CANPS

No vs Yes

64.6 (52.6–76.6)

< 0.0001

Required assessment path done in the Center

Yes vs No

43.8 (32.9–54.7)

< 0.0001

Optional evaluation done in the Center

No vs Yes

5.3 (−6.1–16.8)

0.3612

Psychiatric disorders

No vs Yes

8.8 (−7.0–24.7)

0.2750

Chronic medical diseases

No vs Yes

28.5 (7.5–49.6)

0.0079

Center in the ATS of residence and the nearest

to the municipality of residence

Yes vs No

7.6 (−4.3–19.5)

0.2115

CGI-S score at diagnosis

1–4 vs 5–7

25.7 (11.0–40.4)

0.0006

  1. a. Generalized linear model (GLM). r-squared = 0.12
  2. CI Confidence interval, ADHD Attention-Deficit Hyperactivity Disorder, CANPS Child and Adolescent Neuropsychiatric Services, ATS Local health protection agencies, CGI-S Clinical Global Impression–Severity