data pulled: 2019-05-20
written: 2019-05-25
last ran: 2019-08-09
website: http://rpubs.com/navona/MRP_MRC

This code is used to identify matched controls, as required to test an implementation of the RISH harmonization method described in Karayumak et al., 2019. Here, we use data from the SPINS study, and match the MRP site (target) to the MRC site (reference). We first aim to identify the gold-standard of n=20 matched ‘healthy control’ participants (or at least, the recommended n=16-18), on the basis of sex, age, and IQ (here, established by WTAR). Note: we could not matched on the basis of handedness (established by EHI ≥ .5), due to sample characteristics.

Data count (all sites)

	CMH	CMP	MRC	MRP	ZHH	ZHP
female	20	5	9	15	10	19
male	27	3	16	17	7	21

MRP and MRC overview

	MRC	MRP	p
n	25	32
age (mean (SD))	37.04 (11.14)	33.50 (11.28)	0.242
sex = male (%)	16 (64.0)	17 (53.1)	0.579
wtar_std (mean (SD))	116.28 (9.65)	111.84 (10.91)	0.115

males
	MRC	MRP	p
n	16	17
age (mean (SD))	35.56 (9.80)	33.18 (11.66)	0.531
wtar_std (mean (SD))	118.12 (6.58)	112.12 (13.19)	0.111

females
	MRC	MRP	p
n	9	15
age (mean (SD))	39.67 (13.41)	33.87 (11.22)	0.266
wtar_std (mean (SD))	113.00 (13.40)	111.53 (8.05)	0.739

Matching results

	MRC	MRP	p
n	20	20
age (mean (SD))	37.55 (12.09)	36.95 (11.33)	0.872
sex = male (%)	11 (55.0)	11 (55.0)	1.000
wtar_std (mean (SD))	114.85 (10.42)	116.65 (10.64)	0.592
distance (mean (SD))	0.47 (0.15)	0.49 (0.15)	0.596

List of matched pairs

males

SPN01_MRP_0115	SPN01_MRC_0017
SPN01_MRP_0105	SPN01_MRC_0074
SPN01_MRP_0136	SPN01_MRC_0043
SPN01_MRP_0109	SPN01_MRC_0054
SPN01_MRP_0088	SPN01_MRC_0027
SPN01_MRP_0100	SPN01_MRC_0069
SPN01_MRP_0148	SPN01_MRC_0033
SPN01_MRP_0125	SPN01_MRC_0058
SPN01_MRP_0152	SPN01_MRC_0016
SPN01_MRP_0162	SPN01_MRC_0071
SPN01_MRP_0085	SPN01_MRC_0026

females