Background
Methods
Questionnaire
Data collection
Pre-analysis treatment
Exclusions
Analytical procedures
Matched analysis
Propensity analysis
Covariate description
Age
Socio-economic status
Urban/farm environment
Correction for multiple tests
Results
Matched analysis sample | Propensity analysis sample | |||
---|---|---|---|---|
Cases | Controls | Cases | Controls | |
Number | 469 | 624 | 1151 | 689 |
Age (years) | 7.5 (4.2;10.5) | 7.7 (4.6;10.5) | 7.6 (4.2;10.6) | 7.8 (4.6;10.5) |
Delay (years) | 3.0 (1.0;5.2) | 2.9 (1.1;5.2) | 2.9 (0.9;5.6) | 3.0 (1.1;5.4) |
Missing data (%) | 4.4 (2.7;6.8) | 3.9 (2.5;6.0) | 4.9 (3.1;7.5) | 3.8 (2.4;5.9) |
Matched analysis
Comparison
Matched analysis | Propensity analysis | ||||||
---|---|---|---|---|---|---|---|
Label | Levels | Missing | Effect size | (CI) | Missing | Effect size | (CI) |
Clubb | 2 | 1 %/2 % | 0.49 | (0.35;0.68) | 2 %/2 % | 0.54 | (0.42 0.68) |
Social week-end | 2 | 1 %/1 % | 0.51 | (0.36;0.73) | 1 %/1 % | 0.44 | (0.33;0.58) |
Friend’s pool | 2 | 1 %/0 % | 0.62 | (0.47;0.82) | 1 %/0 % | 0.5 | (0.41;0.62) |
Ski | 2 | 1 %/2 % | 0.49 | (0.36;0.67) | 2 %/2 % | 0.58 | (0.47;0.71) |
Beacha | 4 | 3 %/2 % | 0.27 | (0.14;0.51) | 3 %/2 % | 0.32 | (0.20;0.49) |
Diarrhea | 2 | 5 %/5 % | 0.56 | (0.43;0.74) | 7 %/5 % | 0.62 | (0.51;0.76) |
Cocoa spread | 5 | 1 %/1 % | 0.33 | (0.19;0.57) | 0 %/1 % | 0.44 | (0.29;0.66) |
Sugar baby | 2 | 2 %/3 % | 0.61 | (0.47;0.79) | 3 %/2 % | 0.59 | (0.48;0.71) |
Dental hygieneb | 3 | 0 %/0 % | 0.39 | (0.25;0.6) | 1 %/0 % | 0.45 | (0.33;0.61) |
Dentista | 2 | 3 %/1 % | 0.44 | (0.3;0.64) | 3 %/3 % | 0.37 | (0.28;0.49) |
Dentist (freq.)a | 4 | 2 %/3 % | 0.37 | (0.24;0.58) | 2 %/1 % | 0.34 | (0.25;0.47) |
Stings | 2 | 3 %/3 % | 0.58 | (0.43;0.79) | 3 %/3 % | 0.6 | (0.48;0.74) |
Pet’s death | 2 | 14 %/12 % | 0.51 | (0.35;0.73) | 13 %/11 % | 0.6 | (0.47;0.76) |
Farm vegetables | 2 | 1 %/1 % | 0.57 | (0.42;0.77) | 1 %/1 % | 0.57 | (0.45;0.71) |
Exclusive breastfeeding | 2 | 2 %/2 % | 0.88 | (0.68;1.15) | 2 %/2 % | 0.77 | (0.63;0.94) |
Respiratory infections | 2 | 5 %/4 % | 0.87 | (0.68;1.12) | 6 %/4 % | 0.89 | (0.73;1.1) |