Table 3:

Criteria of appropriateness observed in referral packages before and after automatic reporting of the estimated glomerular filtration rate began^*

Criterion	Period; no. (%) of referrals		Percentage-point change (95% CI)
	Before reporting began	After reporting began
Estimated GFR < 30 mL/min per 1.73 m2	n = 1137‡ 214 (18.8)	n = 1352‡ 322 (23.8)	5.0 (1.8 to 8.2)
Proteinuria†	n = 588§ 85 (14.5)	n = 697§ 113 (16.2)	1.7 (−2.2 to 5.7)
Progressive chronic kidney disease	n = 661¶ 150 (22.7)	n = 796¶ 185 (23.2)	0.5 (−3.8 to 4.9)
Family physician unable to achieve treatment target	n = 1207** 49 (4.1)	n = 1465** 77 (5.3)	1.2 (−0.4 to 2.8)
Specific question by family physician	n = 1207** 397 (32.9)	n = 1465** 427 (29.2)	−3.7 (−7.3 to −0.2)

Note: CI = confidence interval, GFR = glomerular filtration rate.

^*A referral was judged to be inappropriate if it met none of the criteria.

^†Protein excretion > 1 g/d.

^‡Number of referrals in which estimated GFR could be calculated.

^§Number of referrals in which quantification of protein excretion was performed.

^¶Number of referrals in which determination of progressive chronic kidney disease was possible.

^**Total number of referrals.