Table 1.

Baseline^a characteristics of children initiating ART at Chiangrai Prachanukroh Hospital (CRH) and among those referred for follow-up^b at CRH or community hospitals, Chiangrai, Thailand, 2002 to 2007

Variable	Entire cohort initiating ART (n=410)c	CRH follow-up (n=133)c	Community hospital follow-up (n=154)c	pd
Gender, n (%)
– Male	177 (43)	61 (46)	66 (43)	0.610
Baseline age, years
– Median (IQR)	8.6 (6.5 to 10.6)	8.0 (6.7 to 11.3)	8.0 (6.8 to 10.3)	0.455
Baseline HIV stage (%)
– N or A	131 (32)	51 (38)	50 (32)
– B	73 (18)	30 (23)	28 (18)
– C	125 (31)	33 (25)	61 (40)	0.05
Baseline WAZ score (%)
– <−3 SD	67 (16)	19 (14)	28 (18)
– −3 to −2 SD	110 (27)	30 (23)	52 (34)
– >−2 SD	226 (55)	84 (63)	74 (48)	0.034
– Median (IQR)	−1.9 (−2.7 to −1.1)	−1.6 (−2.6 to −0.8)	−2.1(−2.8 to −1.5)	0.001
Baseline CD4% (%)
– <5%	158 (39)	50 (38)	67 (44)
– >5%	224 (55)	76 (57)	79 (51)	0.302
– Median (IQR)	6 (2 to 13)	6 (2 to 12)	5 (2 to 11)	0.303
Baseline viral load (copies/ml)
Median (n)	100,000 (n=79)	133,570 (n=38)	80,400 (n=22)	0.167
(IQR)	(18,629,234,420)	(49,380, 230,700)	(17,622, 153,022)
CD4% (at referrale)
– Median (IQR)	—	20 (14 to 24)	20 (16 to 26)	0.342
WAZ score (referrale)	—
– Median (IQR)		−1.3 (−2.0 to −0.7)	−1.6 (−2.2 to −1.2)	0.003
Follow-up time, months
– Median (IQR)	28 (12 to 42)	35 (16 to 48)	29 (20 to 40)	0.417

^aIncludes baseline characteristics for all variables with the addition of CD4% and weight-for-age Z score (WAZ) at time of referral.

^bFollow-up groups include children eligible for CH follow-up and a comparable group who stayed in follow-up at CRH and meet inclusion criteria (as defined in methods).

^cMissing data; therefore, numbers and percents may not add to total.

^dp-value for Pearson χ² test or Wilcoxon rank-sum test as appropriate to compare CRH and community group.

^e12-month time point assessment taken based on the median referral time of 14 months after ART initiation.