correlation.md
In correlation: Methods for Correlation Analysis

as.data.frame for correlation output

Code
  as.data.frame(correlation(ggplot2::msleep))
Output
      Parameter1  Parameter2          r   CI      CI_low     CI_high            t
  1  sleep_total   sleep_rem  0.7517550 0.95  0.61667557  0.84383201     8.756396
  2  sleep_total sleep_cycle -0.4737127 0.95 -0.70581894 -0.14975542    -2.946170
  3  sleep_total       awake -0.9999986 0.95 -0.99999908 -0.99999779 -5328.711772
  4  sleep_total     brainwt -0.3604874 0.95 -0.56942242 -0.10780364    -2.839979
  5  sleep_total      bodywt -0.3120106 0.95 -0.49442632 -0.10327118    -2.955645
  6    sleep_rem sleep_cycle -0.3381235 0.95 -0.61438094  0.01198335    -1.967883
  7    sleep_rem       awake -0.7517713 0.95 -0.84384279 -0.61669876    -8.756832
  8    sleep_rem     brainwt -0.2213348 0.95 -0.47556189  0.06701441    -1.539344
  9    sleep_rem      bodywt -0.3276507 0.95 -0.53530394 -0.08264933    -2.663776
  10 sleep_cycle       awake  0.4737127 0.95  0.14975542  0.70581894     2.946170
  11 sleep_cycle     brainwt  0.8516203 0.95  0.70882870  0.92736294     8.597296
  12 sleep_cycle      bodywt  0.4178029 0.95  0.08089399  0.66902912     2.518773
  13       awake     brainwt  0.3604874 0.95  0.10780364  0.56942242     2.839979
  14       awake      bodywt  0.3119801 0.95  0.10323781  0.49440083     2.955326
  15     brainwt      bodywt  0.9337822 0.95  0.88916423  0.96081138    19.175704
     df_error             p              Method n_Obs
  1        59  3.783810e-11 Pearson correlation    61
  2        30  4.934837e-02 Pearson correlation    32
  3        81 3.627785e-225 Pearson correlation    83
  4        54  4.934837e-02 Pearson correlation    56
  5        81  4.085332e-02 Pearson correlation    83
  6        30  1.167709e-01 Pearson correlation    32
  7        59  3.783810e-11 Pearson correlation    61
  8        46  1.305716e-01 Pearson correlation    48
  9        59  4.934837e-02 Pearson correlation    61
  10       30  4.934837e-02 Pearson correlation    32
  11       28  2.662362e-08 Pearson correlation    30
  12       30  5.202211e-02 Pearson correlation    32
  13       54  4.934837e-02 Pearson correlation    56
  14       81  4.085332e-02 Pearson correlation    83
  15       54  1.281756e-24 Pearson correlation    56