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Table 4 Sensitivity analysis to compare Greedy 5-to-1 matching and other propensity score matching techniques

From: Differences in proxy-reported and patient-reported outcomes: assessing health and functional status among medicare beneficiaries

 

Greedy 5 to 1 digit matching

Kernel matching

Radius matching

Mahalanobis metric matching

 

RR

 

RR

 

RR

 

RR

 
 

(95 % CI)

 

(95 % CI)

 

(95 % CI)

 

(95 % CI)

 

Physical status

        

ADL

        

 Bathing/showering

2.32 (2.18, 2.47)

*

2.34 (2.18, 2.51)

*

2.33 (2.17, 2.50)

*

2.21 (2.06, 2.36)

*

 Dressing

2.57 (2.38, 2.78)

*

2.66 (2.46, 2.89)

*

2.62 (2.41, 2.84)

*

2.69 (2.48, 2.91)

*

 Eating

3.10 (2.71, 3.53)

*

3.31 (2.90, 3.79)

*

3.20 (2.80, 3.66)

*

3.91 (3.39, 4.50)

*

 Get in/out of bed/chair

1.41 (1.33, 1.49)

*

1.44 (1.35, 1.54)

*

1.41 (1.32, 1.51)

*

1.62 (1.52, 1.74)

*

 Walking

1.16 (1.11, 1.20)

*

1.17 (1.12, 1.24)

*

1.16 (1.11, 1.22)

*

1.20 (1.14, 1.27)

*

 Using the toilet

2.73 (2.48, 3.00)

*

2.84 (2.57, 3.13)

*

2.84 (2.57, 3.13)

*

2.62 (2.38, 2.88)

*

IADL

        

 Telephone

3.70 (3.42, 3.99)

*

4.08 (3.74, 4.44)

*

4.03 (3.70, 4.38)

*

3.37 (3.11, 3.64)

*

 Doing light housework

1.96 (1.85, 2.06)

*

1.98 (1.86, 2.10)

*

1.97 (1.85, 2.10)

*

2.01 (1.89, 2.15)

*

 Doing heavy housework

1.28 (1.24, 1.32)

*

1.28 (1.23, 1.34)

*

1.28 (1.22, 1.34)

*

1.30 (1.24, 1.36)

*

 Preparing meals

2.79 (2.63, 2.96)

*

2.88 (2.70, 3.08)

*

2.84 (2.66, 3.03)

*

2.74 (2.57, 2.93)

*

 Shopping

2.32 (2.21, 2.43)

*

2.39 (2.26, 2.53)

*

2.34 (2.21, 2.48)

*

2.06 (1.95, 2.18)

*

 Managing money

3.83 (3.62, 4.06)

*

4.23 (3.95, 4.53)

*

4.01 (3.75, 4.28)

*

3.40 (3.19, 3.62)

*

Mobility

        

 Stooping/crouching/kneeling

0.97 (0.95, 0.99)

*

0.96 (0.93, 1.00)

 

0.97 (0.94, 1.01)

 

1.01 (0.97, 1.05)

 

 Lifting/carrying 10 pounds

1.18 (1.14, 1.22)

*

1.19 (1.14, 1.24)

*

1.18 (1.13, 1.23)

*

1.27 (1.22, 1.33)

*

 Extending arms above shoulder

1.26 (1.21, 1.32)

*

1.25 (1.19, 1.32)

*

1.24 (1.18, 1.31)

*

1.26 (1.20, 1.33)

*

 Writing/handling object

1.28 (1.23, 1.34)

*

1.29 (1.23, 1.36)

*

1.29 (1.22, 1.35)

*

1.35 (1.29, 1.43)

*

 Walking 1/4 mile or 2–3 blocks

1.09 (1.06, 1.12)

*

1.09 (1.04, 1.13)

*

1.08 (1.04, 1.12)

*

1.12 (1.08, 1.17)

*

Affective status

        

 Depressed

1.03 (1.01, 1.05)

*

1.03 (0.99, 1.07)

 

1.03 (0.99, 1.07)

 

1.06 (1.02, 1.10)

*

 Losing interest

1.12 (1.06, 1.19)

*

1.16 (1.09, 1.24)

*

1.14 (1.07, 1.22)

*

1.21 (1.13, 1.30)

*

Cognitive status

        

 Memory loss

1.96 (1.86, 2.07)

*

2.00 (1.88, 2.12)

*

1.98 (1.86, 2.10)

*

1.80 (1.69, 1.91)

*

 Decision making

2.85 (2.69, 3.03)

*

3.10 (2.89, 3.32)

*

2.99 (2.79, 3.20)

*

2.64 (2.48, 2.82)

*

 Concentrating

1.80 (1.72, 1.88)

*

1.95 (1.85, 2.06)

*

1.90 (1.80, 2.00)

*

1.74 (1.65, 1.84)

*

Social status

        

 Social activities

1.20 (1.16, 1.24)

*

1.20 (1.15, 1.25)

*

1.19 (1.14, 1.24)

*

1.19 (1.14, 1.24)

*

Sensory status

        

 Seeing

1.01 (0.97, 1.06)

 

1.01 (0.96, 1.07)

 

1.01 (0.96, 1.06)

 

1.06 (1.01, 1.12)

*

 Hearing

1.09 (1.05, 1.13)

*

1.09 (1.03, 1.14)

*

1.10 (1.05, 1.16)

*

1.10 (1.05, 1.16)

*

 Eating solid foods

1.05 (0.99, 1.12)

 

1.07 (1.00, 1.15)

 

1.07 (1.00, 1.15)

 

1.15 (1.08, 1.24)

*

  1. RR: Relative risk; CI: Confidence interval; ADL: Activities of daily living; IADL: Instrumental activities of daily living *: Significant at 0.05 level