Table 3.

Characteristics and Measurements of BD Patients Receiving VPA Sub-grouped by the Cut-off Point of MCN

MCN ≥ 2.05(n = 17)MCN < 2.05(n = 43)95% CIComparison
Mean ± SDMean ± SDt/χ 2(Lower, Upper)P valueP1 value
mtDNA copy no.2.18 ± 0.131.89 ± 0.0810.226(0.23, 0.35)<.001*<.001*
CRP, ng/mL5.02 ± 0.555.43 ± 0.5−3.006(−0.69, −0.14).004*.010*
MetS diagnosis, n (%)1 (5.9)15 (34.9)5.240.025*
MetS components, n0.94 ± 1.141.88 ± 1.50−2.333(−1.75, −0.13).023*
Alda scale (A-B total)4.31 ± 3.092.74 ± 2.050.677(−1.18, 2.32).506.392
Responder, n (%)10 (58.8)9 (20.9)6.785.022*
Cognitive function WCST
Perseverative errors9.77 ± 5.2315.91 ± 12.31−2.688(−10.71, −1.57).009*.020*
Completed categories2.77 ± 1.642.02 ± 1.671.548(−0.22, 1.7).127.175
MCN ≥ 2.05(n = 17)MCN < 2.05(n = 43)95% CIComparison
Mean ± SDMean ± SDt/χ 2(Lower, Upper)P valueP1 value
mtDNA copy no.2.18 ± 0.131.89 ± 0.0810.226(0.23, 0.35)<.001*<.001*
CRP, ng/mL5.02 ± 0.555.43 ± 0.5−3.006(−0.69, −0.14).004*.010*
MetS diagnosis, n (%)1 (5.9)15 (34.9)5.240.025*
MetS components, n0.94 ± 1.141.88 ± 1.50−2.333(−1.75, −0.13).023*
Alda scale (A-B total)4.31 ± 3.092.74 ± 2.050.677(−1.18, 2.32).506.392
Responder, n (%)10 (58.8)9 (20.9)6.785.022*
Cognitive function WCST
Perseverative errors9.77 ± 5.2315.91 ± 12.31−2.688(−10.71, −1.57).009*.020*
Completed categories2.77 ± 1.642.02 ± 1.671.548(−0.22, 1.7).127.175

Abbreviations: 95% CI, 95% confidence interval; CRP, C-reactive protein; MCN, mitochondrial DNA copy number; MetS, metabolic syndrome; VPA, valproate; WCST, Wisconsin card sorting test.

1The P value was obtained using ANCOVA after adjustment for age, sex and VPA concentration. In ANCOVA analysis, age and VPA concentration were continuous variables, and sex and groups (using the cutoff point of 2.05 for the MCN value: MCN ≥ 2.05 or MCN < 2.05) were categorical variables. Clinical measurements, including mtDNA copy number, CRP, Alda scale, and cognitive function, were dependent variables (outcome variables).

*P < .05.

Table 3.

Characteristics and Measurements of BD Patients Receiving VPA Sub-grouped by the Cut-off Point of MCN

MCN ≥ 2.05(n = 17)MCN < 2.05(n = 43)95% CIComparison
Mean ± SDMean ± SDt/χ 2(Lower, Upper)P valueP1 value
mtDNA copy no.2.18 ± 0.131.89 ± 0.0810.226(0.23, 0.35)<.001*<.001*
CRP, ng/mL5.02 ± 0.555.43 ± 0.5−3.006(−0.69, −0.14).004*.010*
MetS diagnosis, n (%)1 (5.9)15 (34.9)5.240.025*
MetS components, n0.94 ± 1.141.88 ± 1.50−2.333(−1.75, −0.13).023*
Alda scale (A-B total)4.31 ± 3.092.74 ± 2.050.677(−1.18, 2.32).506.392
Responder, n (%)10 (58.8)9 (20.9)6.785.022*
Cognitive function WCST
Perseverative errors9.77 ± 5.2315.91 ± 12.31−2.688(−10.71, −1.57).009*.020*
Completed categories2.77 ± 1.642.02 ± 1.671.548(−0.22, 1.7).127.175
MCN ≥ 2.05(n = 17)MCN < 2.05(n = 43)95% CIComparison
Mean ± SDMean ± SDt/χ 2(Lower, Upper)P valueP1 value
mtDNA copy no.2.18 ± 0.131.89 ± 0.0810.226(0.23, 0.35)<.001*<.001*
CRP, ng/mL5.02 ± 0.555.43 ± 0.5−3.006(−0.69, −0.14).004*.010*
MetS diagnosis, n (%)1 (5.9)15 (34.9)5.240.025*
MetS components, n0.94 ± 1.141.88 ± 1.50−2.333(−1.75, −0.13).023*
Alda scale (A-B total)4.31 ± 3.092.74 ± 2.050.677(−1.18, 2.32).506.392
Responder, n (%)10 (58.8)9 (20.9)6.785.022*
Cognitive function WCST
Perseverative errors9.77 ± 5.2315.91 ± 12.31−2.688(−10.71, −1.57).009*.020*
Completed categories2.77 ± 1.642.02 ± 1.671.548(−0.22, 1.7).127.175

Abbreviations: 95% CI, 95% confidence interval; CRP, C-reactive protein; MCN, mitochondrial DNA copy number; MetS, metabolic syndrome; VPA, valproate; WCST, Wisconsin card sorting test.

1The P value was obtained using ANCOVA after adjustment for age, sex and VPA concentration. In ANCOVA analysis, age and VPA concentration were continuous variables, and sex and groups (using the cutoff point of 2.05 for the MCN value: MCN ≥ 2.05 or MCN < 2.05) were categorical variables. Clinical measurements, including mtDNA copy number, CRP, Alda scale, and cognitive function, were dependent variables (outcome variables).

*P < .05.

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