Table 1

Multivariable logistic regression analyses of health related behaviours, social relationships, and health status variables in relation to physical activity patterns among boys at the ages of 16, 17, and 18.5 years in FinnTwin16 study

Persistent exercisersPersistently inactive
VariableTotaln (%)OR (95% CI)pn (%)OR (95% CI)p
Values are odds ratios (OR) and 95% confidence intervals (95% CI) for persistent activity and inactivity.
*p<0.05.
†Includes quitters.
‡Other alternatives are comprehensive school, university, higher vocational school, other courses.
§Other alternatives are little bit better, average, little bit worse.
¶Two lowest classes very poor and poor are combined.
NIC, Not included in the final analyses, table includes only statistically significant variables. Results for variables not shown here can be found at www.bjsportsmed.com.
Smoking
    Regular smoker472 21 (4.5%)0.20 (0.11 to 0.36)* 71 (15.0%) 1.80 (1.09 to 2.96)*
    Occasional smoker†790178 (22.5%)0.87 (0.66 to 1.15) 49 (6.2%) 0.98 (0.62 to 1.53)
    Non-smoker936234 (25%)1.00 50 (5.3%) 1.00
AlcoholNIC
    Heavy users397 49 (12.3%)1.28 (0.95 to 1.72)
    Users1285283 (22.0%)0.92 (0.55 to 1.53)
    Non-users548113 (20.6%)1.00
Breakfast eating
    Once a week274 13 (4.7%)0.39 (0.23 to 0.67)* 14 (5.1%) 2.55 (1.64 to 3.97)*
    3–4 times a week283 25 (8.8%)0.76 (0.50 to 1.14) 13 (4.6%) 0.94 (0.52 to 1.70)
    Every morning1670213 (12.6%)1.00 60 (3.4%) 1.00
School type
    Vocational school885107 (12.1%)0.46 (0.34 to 0.64)* 94 (10.6%) 1.65 (1.04 to 2.62)*
    Other alternatives‡194 16 (8.3%)0.40 (0.22 to 0.75)* 24 (12.4%) 1.40 (0.67 to 2.92)
    Gymnasium1139318 (27.9%)1.00 54 (4.7%) 1.00
School grade
    Worse than average62 1 (1.6%)0.38 (0.09 to 1.53) 11 (17.7%) 1.86 (0.74 to 4.64)
    Other alternatives§1808353 (20%)1.26 (0.90 to 1.76)142 (8.0%) 0.89 (0.50 to 1.59)
    Better than average323 88 (27.2%)1.00 15 (4.6%) 1.00
Father's socioeconomic status NIC
    Lower level employee308 27 (8.8%) 1.78 (0.94 to 3.36)
    Worker690 63 (9.1%) 1.46 (0.82 to 2.58)
    Self employed174 22 (12.6%) 2.45 (1.25 to 4.80)*
    Farmer189 11 (8.6%) 1.06 (0.45 to 2.43)
    Upper level employee478 7 (1.5%) 1.00
Mother's socioeconomic statusNIC
    Lower level employee1015207 (20.4%)0.86 (0.59 to 1.23)
    Worker437 86 (19.7%)1.18 (0.74 to 1.88)
    Self employed98 19 (19.4%)0.25 (0.08 to 0.77)*
    Farmer160 27 (16.9%)0.75 (0.40 to 1.40)
    Upper level employee308 75 (24.3%)1.00
Own perception of current health
    Poor¶20 1 (5%)0.27 (0.04 to 1.51) 8 (40%)17.8 (5.64 to 56.7)*
    Rather good or average1222159 (13%)0.47 (0.37 to 0.61)*130 (11%) 2.16 (1.41 to 3.31)*
    Very good1011290 (28.7%)1.00 38 (3.8%) 1.00
Body mass index NIC
    26>82 11 (13.4%)2.71 (1.13 to 6.46)
    19–251813335 (18.5%)2.40 (1.50 to 3.85)
    <18244 27 (11.1%)1.00