Predictor | Unadjusted OR (95% CI) | Full model OR (95% CI) | Final model OR (95% CI) |
Age at most recent visit | |||
15–19 | 0.70 (0.54 to 0.92) | 0.80 (0.57 to 1.11) | – |
20–29 | 1 | 1 | – |
30–39 | 1.23 (1.10 to 1.38) | 1.01 (0.88 to 1.16) | – |
40–50 | 1.37 (1.18 to 1.58) | 0.91 (0.75 to 1.10) | – |
Number of living children | |||
0–1 | 1 | 1 | 1 |
2–3 | 1.14 (0.99 to 1.31) | 0.95 (0.80 to 1.13) | 0.99 (0.85 to 1.15) |
4+ | 1.37 (1.20 to 1.58) | 1.15 (0.94 to 1.41) | 1.16 (0.99 to 1.35) |
Ethnicity | |||
Wolof | 1 | 1 | – |
Serere | 0.84 (0.70 to 1.02) | 0.95 (0.76 to 1.18) | – |
Toucouleur | 0.97 (0.81 to 1.15) | 0.98 (0.80 to 1.20) | – |
Mandingue/Diola/Other | 0.82 (0.71 to 0.94) | 0.99 (0.83 to 1.17) | – |
Religion | |||
Muslim | 1 | 1 | 1 |
Christian or other | 0.78 (0.63 to 0.98) | 0.82 (0.63 to 1.06) | 0.78 (0.61 to 0.98) |
Marital status | |||
Married | 1 | 1 | – |
Single, widowed, divorced, separated | 0.81 (0.66 to 0.99) | 0.93 (0.72 to 1.21) | – |
Occupation | |||
Housewife | 1 | – | – |
Student/Other | 0.96 (0.85 to 1.08) | – | – |
Education | |||
None | 1 | 1 | 1 |
Primary | 1.10 (0.97 to 1.24) | 1.10 (0.96 to 1.26) | 1.08 (0.95 to 1.23) |
Secondary or higher | 0.84 (0.73 to 0.97) | 0.89 (0.75 to 1.04) | 0.87 (0.75 to 1.01) |
Visit number | |||
2 | 0.19 (.016 to 0.23) | 0.60 (0.48 to 0.74)* | 0.58 (0.47 to 0.70)* |
3 | 1 | 1* | 1* |
4 | 1.10 (0.95 to 1.28) | 0.78 (0.65 to 0.94)* | 0.79 (0.66 to 0.94)* |
5–10 | 1.07 (0.95 to 1.21) | 0.58 (0.50 to 0.68)* | 0.58 (0.50 to 0.67)* |
11+ | 1.26 (1.08 to 1.47) | 0.57 (0.47 to 0.68)* | 0.55 (0.46 to 0.65)* |
Contraceptive method | |||
Injectable | 1 | 1 | 1 |
Pill | 3.30 (2.91 to 3.75) | 4.53 (3.87 to 5.29) | 4.62 (3.99 to 5.35) |
Previous delay | |||
None | 1 | 1 | 1 |
At least one | 6.61 (5.98 to 7.30) | 7.54 (6.47 to 8.79) | 7.54 (6.53 to 8.72) |
Location | |||
Rural | 1 | – | – |
Urban | 1.07 (0.83 to 1.37) | – | – |
Facility type | |||
Health centre | 1 | 1 | – |
Health post | 1.24 (0.95 to 1.61) | 1.08 (0.92 to 1.28) | – |
Region | |||
Dakar | 1 | 1 | – |
Diourbel | 1.20 (0.53 to 2.72) | 1.62 (0.74 to 3.55) | – |
Fatick | 0.78 (0.51 to 1.18) | 1.04 (0.72 to 1.51) | – |
Kaffrine | 0.77 (0.55 to 1.06) | 1.13 (0.87 to 1.47) | – |
Kedougou | 0.50 (0.33 to 0.77) | 0.76 (0.48 to 1.19) | – |
Matam | 0.79 (0.55 to 1.16) | 1.07 (0.75 to 1.52) | – |
Sedhiou | 0.65 (0.47 to 0.90) | 0.93 (0.67 to 1.28) | – |
Thies | 0.60 (0.16 to 2.25) | 1.21 (0.26 to 5.65) | – |
Ziguinchor | 0.64 (0.42 to 0.99) | 1.04 (0.76 to 1.44) | – |
Percentage of months with stockouts of pills or injectables | |||
0%–9% | 1 | 1 | – |
10%–20% | 0.82 (0.63 to 1.07) | 0.95 (0.75 to 1.20) | |
20% and above | 0.67 (0.49 to 0.90) | 0.90 (0.68 to 1.19) | – |
Number of FP providers | |||
1–2 | 1 | – | – |
3–4 | 1.06 (0.80 to 1.41) | – | – |
5 and above | 0.83 (0.62 to 1.11) | ||
Monthly FP consultations in facility | – | ||
0–30 | 1 | – | – |
30–80 | 1.18 (0.84 to 1.64) | – | – |
80 and above | 1.05 (0.77 to 1.43) | – | – |
Note: The full and final models include all variables with reported ORs in the relevant column.
*Visit 3 is used as the reference category for this variable since the full and final models adjust for previous delay, and it is not possible to have a previous delay at the second visit. The ORs for each category when previous delay is omitted from the final model are as follows: visit 2: OR=0.19 (0.16 to 0.23); visit 3: OR=1 (reference); visit 4: OR=1.12 (0.94 to 1.33); visits 5–10: OR=1.07 (0.92 to 1.23); visits 11+: OR=1.15 (0.96 to 1.37).