Table 3 Tested hypotheses on construct validity: Satisfaction with one's own performance as a caregiver

Burden

A moderate to strong negative association with measures of caregivers' burden.

1. Association with caregivers' burden:

r = -0.21, 95% Confidence Interval (CI): [-0.43, 0.01]; n = 82.

2. Categories of burden:

-equal distances: 49.5 (SPPIC 0–3, n = 45), 48.6 (3–6, n = 25), to 46.7 (6–9, n = 12);

-equal observations: 49.9 (1, n = 21), 49.4 (2, n = 18), 49.6 (3, n = 23), 46.2 (4, n = 20).

Mental quality of life

A moderate to strong positive association with measures of caregivers' mental quality of life.

1. Association with caregivers' mental quality of life:

r = 0.24, 95% CI: [0.03, 0.46]; n = 88.

2. Categories of mental quality of life:

-equal distances: 46.1 (MCS 0–33.3, n = 8), 48.3 (33.3–49.9, n = 27), to 50.0 (49.9–100.0, n = 53);

F = 1.535, p = 0.221;

-equal observations: 47.3 (1, n = 22), 48.2 (2, n = 22), 50.1 (3, n = 22), 50.8 (4, n = 22); F = 1.434, p = 0.239.

Depressive symptoms

A moderate to strong negative association with depressive symptoms.

1. Association with caregivers' depressive symptoms:

r = -0.21, 95% CI: [-0.42, 0.004]; n = 88.

2. Categories of depressive symptoms:

-dichotomised: 47.4 (CES-D ≥ 16.0, n = 18), 49.5 (CES-D < 16, n = 70),

student's t-test: p = 0.212.

Mastery

A moderate to strong positive association with mastery.

1. Association with caregivers' mastery:

r = 0.19, 95% CI: [-0.02, 0.41]; n = 85.

2. Categories of mastery:

-equal distances: 46.8 (mastery 16–21, n = 18), 49.3 (mastery 21–28, n = 45), to 50.7 (mastery 28–35, n = 21);

-equal observations: 47.2 (1, n = 23), 50.5 (2, n = 20), 48.3 (3, n = 20), 50.7 (4, n = 22).