Table 4.
Predictor variables for airway clearance adherence clusters
| Group 1 (Low Adherence) | Group 2 (Medium Adherence) | Group 3 (High Adherence) | Group 4 (Superadherence) | |||
|---|---|---|---|---|---|---|
| Continuous | |
|||||
| Depressive symptoms (CES-D) |
15.0 (10.5–24.3) | 9.0* (4.0–22.0) | 19.5 (9.75–28.0) | 16.0 (7.5–21.0) | ||
| Sanctification of the body (manifestation of God in child’s body) |
60.0 (48.8–71.0) | 70.0 (56.5–77.0) | 72.0 (59.0–77.0) | 58.0† (49.0–77.0) | ||
| Perceived behavioral norms (other parents of children with CF) |
14.5‡ (12.3–15.0) | 15.0 (13.5–15.0) | 15.0 (15.0–15.0) | 15.0 (13.5–15.0) | ||
| Perceived behavioral norms (airway clearance) |
18.0‡ (16.0–18.0) | 18.0 (18.0–18.0) | 18.0 (18.0–18.0) | 18.0 (17.0–18.0) | ||
| Self-efficacy for completing airway clearance treatment |
856.0§ (801.8–958.5) | 1,077.0 (1,044.0–1,095.8) | 1,080.5‡ (1,027.5–1,097.3) | 1,085.0‖ (974.0–1,098.5) | ||
| Child age |
2.5 (1.6–10.5) | 6.4* (4.0–9.3) | 2.8 (1.7–5.1) | 5.3 (2.5–7.6) | ||
| Categorical | |
|||||
| Parent age‡, yr | 18–25 | 4 (19%) | 1 (4%) | 2 (6%) | 3 (8%) | |
| 26–30 | 2 (10%) | 5 (20%) | 7 (21%) | 8 (22%) | ||
| 31–35 | 5 (24%) | 8 (32%) | 18 (53%) | 10 (27%) | ||
| 36–40 | 7 (33%) | 4 (16%) | 2 (6%) | 11 (30%) | ||
| 41–45 | 1 (5%) | 4 (16%) | 4 (12%) | 4 (11%) | ||
| 46 and older | 2 (10%) | 3 (12%) | 1 (3%) | 1 (3%) | ||
| Parent education level§ | Some high school | 3 (15%) | 0 (0%) | 3 (9%) | 0 (0%) | |
| High school graduate | 5 (25%) | 3 (12%) | 6 (18%) | 8 (22%) | ||
| Some college | 7 (35%) | 4 (16%) | 13 (38%) | 12 (32%) | ||
| College graduate | 4 (20%) | 14 (56%) | 9 (26%) | 15 (41%) | ||
| Graduate school | 1 (5%) | 4 (16%) | 3 (9%) | 2 (5%) | ||
| Collaborative religious coping‖ | Not at all | 5 (25%) | 5 (20%) | 6 (18%) | 4 (11%) | |
| Somewhat | 8 (40%) | 7 (28%) | 11 (32%) | 14 (38%) | ||
| Quite a bit | 1 (5%) | 6 (24%) | 7 (21%) | 13 (35%) | ||
| A great deal | 6 (30%) | 7 (28%) | 10 (29%) | 6 (16%) | ||
| Number of exacerbations in prior years‡,§,‖ | 0 | 16 (76%) | 11 (44%) | 20 (59%) | 17 (46%) | |
| 1 | 2 (10%) | 7 (28%) | 6 (18%) | 8 (22%) | ||
| 2 | 0 (0%) | 4 (16%) | 7 (21%) | 9 (24%) | ||
| 3 | 0 (0%) | 1 (4%) | 0 (0%) | 1 (3%) | ||
| 4 | 1 (5%) | 0 (0%) | 0 (0%) | 2 (5%) | ||
| 5 | 2 (10%) | 0 (0%) | 0 (0%) | 0 (0%) | ||
| 6 | 0 (0%) | 1 (4%) | 1 (3%) | 0 (0%) | ||
| 7 | 0 (0%) | 1 (4%) | 0 (0%) | 0 (0%) | ||
Definition of abbreviation: CES-D = Center for Epidemiologic Studies Depression Scale; CF = cystic fibrosis.
Data are presented as median (interquartile range) or number (%).
*
Represents significant difference (P ≤ 0.05) between Group 2 and Group 3.
†
Represents significant difference (P ≤ 0.05) between Group 3 and Group 4.
‡
Represents significant difference (P ≤ 0.05) between Group 1 and Group 3.
§
Represents significant difference (P ≤ 0.05) between Group 1 and Group 2.
‖
Represents significant difference (P ≤ 0.05) between Group 1 and Group 4.