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Table 2 Characteristics of the study population and distribution of daily FV intake (n 995)

From: The role of curriculum dose for the promotion of fruit and vegetable intake among adolescents: results from the Boost intervention

Individual-level characteristics

n(%)

FV intake at baseline, g Mean, median (SD)

FV intake at follow-up, g Mean, median (SD)

Missing (n)

Students’ daily FV intake

995

395, 340 (291.7)

407, 350 (289.3)

 

Gender

    

Boys

507 (51.0)

382, 300 (305.1)

380.8, 330 (280.4)

 

Girls

488 (49.1)

408, 360 (276.4)

434.4, 380 (296.0)

Family occupational social class

   

55

High

259 (27.6)

449, 398 (306.1)

452, 400 (307.5)

 

Medium

265 (28.2)

377, 315 (285.8)

416, 375 (293.8)

 

Low

229 (24.4)

376, 313 (292.5)

378, 328 (268.7)

 

Unclassifiable

187 (19.9)

356, 300 (293.6)

344, 300 (269.6)

 

Family educational level

   

428

High

118 (20.8)

465, 400 (291.1)

455, 395 (310.9)

 

Medium high

200 (35.3)

423, 400 (287.5)

448, 400 (294.4)

 

Low/none

249 (43.9)

382, 330 (288.0)

413, 350 (287.1)

 

School- and class-level characteristics (data source)

n students (%) or mean (range)

 

n schools (%)

 

Curriculum dose delivered at school-level (teacher-reported)

    

Low

363 (36.5)

 

7 (35.0)

 

Medium

256 (25.7)

 

6 (30.0)

 

High

376 (37.8)

 

7 (35.0)

 

Curriculum dose received at school-level (student-reported)

Mean 6.9 (range: 3.6–12.3)

   

Curriculum dose received at class-level (student-reported)

Mean 6.9 (range: 0–13.5)

   

School’s focus on FV prior to the Boost intervention

    

Yes

649 (65.2)

 

14 (70.0)

 

No

346 (34.8)

 

6 (30.0)

 

FV availability at school apart from the Boost distribution

    

Every day

712 (71.6)

 

13 (65.0)

 

Most days or less

283 (28.4)

 

7 (35.0)

 

Newsletters: dose delivered at school-level

    

2-3

448 (45.0)

 

9 (45.0)

 

4-6

547 (55.0)

 

11 (55.0)

 

Pleasant eating environment: dose delivered at school-level

    

≤50 %

461 (46.3)

 

10 (50.0)

 

>50 %

534 (53.7)

 

10 (50.0)