Table 2.

Numeracy Assessment Results

Paired Comparison	n	SNS mean (sd)	SNS range *	ONS mean (sd)	ONS range *	Spearman r	95% ci	p value
SNS vs Numi	124	4.2 (0.95)	1.8 to 6	6 (1.5)	2 to 8	0.35	0.18 to 0.49	< 0.001
SNS vs GHNT	113	4.3 (1.08)	1 to 6	3.5 (1.7)	0 to 6	0.44	0.28 to 0.58	< 0.001
SNS vs Lipkus	151	4.0 (1.0)	1.1 to 6	7.1 (2.7)	1 to 11	0.39	0.24 to 0.52	< 0.001
SNS vs Berlin	182	4.1 (1.0)	1.1 to 6	1.1 (0.93)	0 to 4	0.19 †	0.05 to 0.33	0.009
SNS vs Weller	100	4.6 (0.79)	2.5 to 5.8	4.4 (2.0)	0 to 8	0.34	0.15 to 0.50	< 0.001

^*Maximum score ranges: SNS 1 to 6; Numi 0 to 8; GHNT 0 to 6; Lipkus 0 to 11; Berlin 0 to 4; Weller 0 to 8.

^†Correlation significantly different from GHNT vs SNS correlation (p = 0.02) and marginally different from Lipkus vs SNS correlation (p = 0.06).

Abbreviations: SNS refers to the subjective numeracy scale; ONS refers to one of the objective numeracy instruments, NUMI refers to the Numeracy Understanding in Medicine short form; GHNT refers to the 6 item version of the General Health Numeracy Test; Lipkus refers to the Lipkus expanded numeracy scale; Berlin refers to the 4 item, multiple choice version of the Berlin Numeracy Test; Weller refers to the Weller Abbreviated Numeracy Scale.