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Table 1 The characteristics of the study sample

From: Social support and dairy products intake among adolescents: a study from Iran

  All (n = 402) Girls (n = 207) Boys (n = 195) P-value
  No. (%) No. (%) No. (%)  
Age (yrs)     0.452*
 ≤12 65 (16.1) 35 (16.9) 30 (15.4)  
 13 301 (74.9) 157 (75.8) 144 (73.8)  
 ≥14 36 (9) 15 (7.2) 21 (1.08)  
 Mean (SD) 12.93 (0.49) 12.90 (0.47) 12.95 (0.50) 0.302**
Mother’s age (yrs)     0.163*
 20–34 120 (29.9) 61 (29.5) 59 (30.3)  
 35–39 143 (35.6) 82 (39.6) 61 (31.3)  
 40–55 139 (34.6) 64 (30.9) 75 (38.5)  
 Mean (SD) 37.4 (5.13) 36.97 (4.50) 37.83 (5.69) 0.091**
Mother’s employment (No., %)     <0.001*
 Housewife 341 (84.8) 161 (77.8) 180 (92.3)  
 Employed 61 (15.2) 46 (22.2) 15 (7.7)  
Mother’s education (yrs)     0.020*
 0–12 352 (87.6) 174 (84.1) 178 (91.3)  
 >12 50 (12.4) 33 (15.9) 17 (8.7)  
Mean (SD) 10.36 (3.39) 10.99 (3.03) 9.89 (3.62) <0.001**
Father’s education (yrs)     
 0–12 320 (79.6) 156 (75.4) 164 (84.1)  
 >12 82 (20.4) 51 (24.6) 31 (15.9)  
 Mean (SD) 10.89 (3.66) 11.48 (3.31) 10.27 (3.98) 0.001**
Parent marital status (No., %)     0.052*
 Married 385 (95.8) 202 (97.6) 183 (93.8)  
 Widowed 17 (4.2) 5 (2.4) 12 (6.2)  
FAS     0.811*
 High (9–13) 32 (8) 19 (9.2) 13 (6.7)  
 Intermediate (5–8) 309 (76.8) 163 (78.7) 146 (74.9)  
 Low (0–4) 61 (15.2) 25 (12.1) 36 (18.5)  
Physical activity (minutes/day)     
 Mean (SD) 44.64 (23.24) 38.77 (19.94) 50.87 (24.88) <0.001**
 ≥60 89 (22.1) 35 (16.90) 54 (27.7)  
Sedentary activity (minutes/day)     
 Mean (SD) 192.83 (89.23) 170.26 (89.20 218.25 (103.34 <0.001**
 ≤120 139 (34.6) 93 (44.9) 46 (23.6)  
Self-efficacy score     
 Mean (SD) 29.01 (7.09) 29.04 (7.25) 28.97 (7.04) 0.923**
 Score range 8–40 8–40 8–40  
PIFS score     
 Mean (SD) 18.55 (5.62) 18.68 (6.64) 18.4 (4.28) 0.611**
 Score range 3–15 3–15 3–15  
PEFS score     
 Mean (SD) 9.31 (3.2) 9.35 (3.31) 9.25 (3.15) 0.754**
 Score range 3–15 3–15 3–15  
PPFS score     
 Mean (SD) 25.46 (5.50) 26.61 (5.62) 24.25 (5.07) <0.001**
 Score range 11–55 11–55 11–55  
  1. *Derived from chi-square, **Derived from t-test
  2. FAS: Family affluence scale
  3. PIFS: Perceived informational family support
  4. PEFS: Perceived emotional family support
  5. PPFS: Perceived practical family support