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Table 1 Comparison of the characteristics between never users and current users

From: Methylphenidate use and school performance among primary school children: a descriptive study

 

Never users, n (%)

Current users, n (%)

p value

(Chi2)

Total

7295 (100)

377 (100)

 

Sex

  

<.05*

 Boys

3275 (44.9)

298 (79.0)

 

 Girls

4020 (55.1)

79 (21.0)

 

Ethnicity

  

<.05*

 Dutch

6407 (87.8)

358 (95.0)

 

 non-Dutch

888 (12.2)

19 (5.0)

 

Parent Household

  

.656

 Two-parent household

5987 (82.1)

306 (81.2)

 

 single-parent household

1308 (17.9)

71 (18.8)

 

Household income

  

<.05*

 low

3010 (41.3)

171 (45.4)

 

 intermediate

3176 (43.5)

166 (44.0)

 

 high

1109 (15.2)

40 (10.6)

 

Treated concurrently with

 Asthma medication

100 (1.4)

11 (2.5)

<.05*

 Antipsychotics

 

19 (4.3)

 

 Only MPH users

 

347 (78.7)

 

Start of MPH treatment

 Late ≤12 months

 

38 (10.1)

 

 Early >12 months

 

339 (89.9)

 

Dosage of MPH treatment

  ≤ 0.999 NDDD/Day

 

202 (53.6)

 

  > 0.999 NDDD/Day

 

132 (35.0)

 
  1. Abbreviations: n, sample size; NDDD, number of Defined Daily Dose
  2. * Significant at .05 level